diff --git a/HTMLparser.c b/HTMLparser.c
index 2eb3fb49..bf15c6a5 100644
--- a/HTMLparser.c
+++ b/HTMLparser.c
@@ -6780,8 +6780,11 @@ htmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
 
     input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                          XML_CHAR_ENCODING_NONE);
-    if (input == NULL)
+    if (input == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
         return (NULL);
+    }
     ctxt = htmlNewParserCtxt();
     if (ctxt == NULL) {
         xmlFreeParserInputBuffer(input);
@@ -6980,8 +6983,11 @@ htmlCtxtReadIO(htmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
 
     input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                          XML_CHAR_ENCODING_NONE);
-    if (input == NULL)
+    if (input == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
         return (NULL);
+    }
     stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
     if (stream == NULL) {
         xmlFreeParserInputBuffer(input);
diff --git a/parser.c b/parser.c
index 7ea5a887..b39aa59c 100644
--- a/parser.c
+++ b/parser.c
@@ -11984,11 +11984,15 @@ xmlCreateIOParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
     xmlParserCtxtPtr ctxt;
     xmlParserInputPtr inputStream;
     xmlParserInputBufferPtr buf;
-    
+
     if (ioread == NULL) return(NULL);
 
     buf = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, enc);
-    if (buf == NULL) return(NULL);
+    if (buf == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
+        return (NULL);
+    }
 
     ctxt = xmlNewParserCtxt();
     if (ctxt == NULL) {
@@ -12013,7 +12017,7 @@ xmlCreateIOParserCtxt(xmlSAXHandlerPtr sax, void *user_data,
 	    memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1));
 	if (user_data != NULL)
 	    ctxt->userData = user_data;
-    }	
+    }
 
     inputStream = xmlNewIOInputStream(ctxt, buf, enc);
     if (inputStream == NULL) {
@@ -14787,7 +14791,7 @@ xmlReadFd(int fd, const char *URL, const char *encoding, int options)
  * @options:  a combination of xmlParserOption
  *
  * parse an XML document from I/O functions and source and build a tree.
- * 
+ *
  * Returns the resulting document tree
  */
 xmlDocPtr
@@ -14803,8 +14807,11 @@ xmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
 
     input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                          XML_CHAR_ENCODING_NONE);
-    if (input == NULL)
+    if (input == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
         return (NULL);
+    }
     ctxt = xmlNewParserCtxt();
     if (ctxt == NULL) {
         xmlFreeParserInputBuffer(input);
@@ -14830,7 +14837,7 @@ xmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
  *
  * parse an XML in-memory document and build a tree.
  * This reuses the existing @ctxt parser context
- * 
+ *
  * Returns the resulting document tree
  */
 xmlDocPtr
@@ -14985,7 +14992,7 @@ xmlCtxtReadFd(xmlParserCtxtPtr ctxt, int fd,
  *
  * parse an XML document from I/O functions and source and build a tree.
  * This reuses the existing @ctxt parser context
- * 
+ *
  * Returns the resulting document tree
  */
 xmlDocPtr
@@ -15006,8 +15013,11 @@ xmlCtxtReadIO(xmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
 
     input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                          XML_CHAR_ENCODING_NONE);
-    if (input == NULL)
+    if (input == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
         return (NULL);
+    }
     stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
     if (stream == NULL) {
         xmlFreeParserInputBuffer(input);
diff --git a/xmlreader.c b/xmlreader.c
index 864abf0a..ef41927e 100644
--- a/xmlreader.c
+++ b/xmlreader.c
@@ -5401,8 +5401,11 @@ xmlReaderForIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
 
     input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                          XML_CHAR_ENCODING_NONE);
-    if (input == NULL)
+    if (input == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
         return (NULL);
+    }
     reader = xmlNewTextReader(input, URL);
     if (reader == NULL) {
         xmlFreeParserInputBuffer(input);
@@ -5619,10 +5622,14 @@ xmlReaderNewIO(xmlTextReaderPtr reader, xmlInputReadCallback ioread,
 
     input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
                                          XML_CHAR_ENCODING_NONE);
-    if (input == NULL)
-        return (-1);
+    if (input == NULL) {
+        if (ioclose != NULL)
+            ioclose(ioctx);
+        return (NULL);
+    }
     return (xmlTextReaderSetup(reader, input, URL, encoding, options));
 }
+
 /************************************************************************
  *									*
  *			Utilities					*