BIO_write returns an int. Whacha gonna do? Kill the last non-ab warning.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91220 13f79535-47bb-0310-9956-ffa450edef68

modules/ssl/ssl_engine_io.c

@@ -259,7 +259,7 @@ static apr_status_t churn(SSLFilterRec *pRec,
 
 	n = BIO_write (pRec->pbioRead, data, len);
         
-        if (n != len) {
+        if ((apr_size_t)n != len) {
             /* this should never really happen, since we're just writing
              * into a memory buffer, unless, of course, we run out of 
              * memory