build: Fix some msvc build warnings

warning C4133: 'function': incompatible types - from 'GESTrackType *' to 'guint *'

ges/ges-structured-interface.c

@@ -449,7 +449,7 @@ _ges_add_clip_from_struct (GESTimeline * timeline, GstStructure * structure,
 
   if (track_types_str) {
     if (!get_flags_from_string (GES_TYPE_TRACK_TYPE, track_types_str,
-            &track_types)) {
+            (guint *) & track_types)) {
       *error =
           g_error_new (GES_ERROR, 0, "Invalid track types: %s",
           track_types_str);

tools/ges-launcher.c

@@ -60,7 +60,8 @@ static gboolean
 _parse_track_type (const gchar * option_name, const gchar * value,
     GESLauncherParsedOptions * opts, GError ** error)
 {
-  if (!get_flags_from_string (GES_TYPE_TRACK_TYPE, value, &opts->track_types))
+  if (!get_flags_from_string (GES_TYPE_TRACK_TYPE,
+          value, (guint *) & opts->track_types))
     return FALSE;
 
   return TRUE;