Moved WIN32 pthread_key_delete to own file

Makefile

@@ -241,6 +241,7 @@ LIB_SOURCES =	src/libhttp.c						\
 		src/pthread_cond_timedwait.c				\
 		src/pthread_cond_wait.c					\
 		src/pthread_key_create.c				\
+		src/pthread_key_delete.c				\
 		src/pthread_mutex_destroy.c				\
 		src/pthread_mutex_init.c				\
 		src/pthread_mutex_lock.c				\

src/libhttp.c

@@ -113,13 +113,6 @@ mg_static_assert(sizeof(size_t) == 4 || sizeof(size_t) == 8, "size_t data type s
 static CRITICAL_SECTION global_log_file_lock;
 
 
-static int pthread_key_delete(pthread_key_t key) {
-
-	return TlsFree(key) ? 0 : 1;
-
-}  /* pthread_key_delete */
-
-
 static int pthread_setspecific(pthread_key_t key, void *value) {
 
 	return TlsSetValue(key, value) ? 0 : 1;

src/pthread_key_delete.c

@@ -0,0 +1,38 @@
+/* 
+ * Copyright (c) 2016 Lammert Bies
+ * Copyright (c) 2013-2016 the Civetweb developers
+ * Copyright (c) 2004-2013 Sergey Lyubka
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+
+#include "libhttp-private.h"
+
+
+#ifdef _WIN32
+
+int pthread_key_delete( pthread_key_t key ) {
+
+	return TlsFree(key) ? 0 : 1;
+
+}  /* pthread_key_delete */
+
+#endif  /* _WIN32 */