Properly put the pragma comment for the MSVC linker in defines
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index a3e9f2b..6abc073 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -42,11 +42,13 @@
 #include <winsock2.h>
 #include <windows.h>
 
+#if defined(_MSC_VER)
 #if defined(_WIN32_WCE)
 #pragma comment( lib, "ws2.lib" )
 #else
 #pragma comment( lib, "ws2_32.lib" )
 #endif
+#endif /* _MSC_VER */
 #endif
 
 #include "polarssl/base64.h"