info: Cut down src file names for MinGW too

Fixes #674320

gst/gstinfo.c

@@ -438,7 +438,7 @@ gst_debug_log (GstDebugCategory * category, GstDebugLevel level,
   va_end (var_args);
 }
 
-#ifdef _MSC_VER
+#ifdef G_OS_WIN32
 /* based on g_basename(), which we can't use because it was deprecated */
 static inline const gchar *
 gst_path_basename (const gchar * file_name)
@@ -494,7 +494,7 @@ gst_debug_log_valist (GstDebugCategory * category, GstDebugLevel level,
   /* The predefined macro __FILE__ is always the exact path given to the
    * compiler with MSVC, which may or may not be the basename.  We work
    * around it at runtime to improve the readability. */
-#ifdef _MSC_VER
+#ifdef G_OS_WIN32
   file = gst_path_basename (file);
 #endif