Updated test_post.c to not ignore specific error on W32 if libcurl

is built with workaround for WinSock bug.

ChangeLog

@@ -1,3 +1,10 @@
+Wed Apr 20 18:12:30 CET 2016
+	Fixed macros in sysfdsetsize.c which could prevent compiling with
+	non-default FD_SETSIZE.
+	Fixed comments in mhd_str.c.
+	Updated test_post.c to not ignore specific error on W32 if libcurl
+	is built with workaround for WinSock bug. -EG
+
 Mon Apr 18 19:35:14 CET 2016
 	Fixed data races leading to inability in rare situations to
 	resume suspended connection. -EG

src/testcurl/test_post.c

@@ -598,8 +598,10 @@ testMultithreadedPostCancelPart(int flags)
   if (CURLE_HTTP_RETURNED_ERROR != (errornum = curl_easy_perform (c)))
     {
 #ifdef _WIN32
-      if (0 != (flags & FLAG_SLOW_READ) && CURLE_RECV_ERROR == errornum)
-        {
+      curl_version_info_data *curlverd = curl_version_info(CURLVERSION_NOW);
+      if (0 != (flags & FLAG_SLOW_READ) && CURLE_RECV_ERROR == errornum &&
+          (curlverd == NULL || curlverd->ares_num < 0x073100) )
+        { /* libcurl up to version 7.49.0 didn't have workaround for WinSock bug */
           fprintf (stderr, "Ignored curl_easy_perform expected failure on W32 with \"slow read\".\n");
           result = 0;
         }