Merge pull request #367 from JuergenKosel/Fix_MSVC2010_mqttas

Fix Socket_setnonblocking() for Windows (At least if build with MSVC …

src/Socket.c

@@ -36,7 +36,6 @@
 #include "SSLSocket.h"
 #endif
 
-#include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <signal.h>
@@ -99,6 +98,10 @@ int Socket_setnonblocking(int sock)
  */
 int Socket_error(char* aString, int sock)
 {
+#if defined(WIN32) || defined(WIN64)
+	int errno;
+#endif
+
 	FUNC_ENTRY;
 #if defined(WIN32) || defined(WIN64)
 	errno = WSAGetLastError();