vout: initialize "scale" before "zoom" (refs #4027)

The zoom callback depends on the scale variable...

src/video_output/vout_intf.c

@@ -162,6 +162,19 @@ void vout_IntfInit( vout_thread_t *p_vout )
     var_Create( p_vout, "mouse-hide-timeout",
                 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
 
+    /* Add variables to manage scaling video */
+    var_Create( p_vout, "autoscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
+                | VLC_VAR_ISCOMMAND );
+    text.psz_string = _("Autoscale video");
+    var_Change( p_vout, "autoscale", VLC_VAR_SETTEXT, &text, NULL );
+    var_AddCallback( p_vout, "autoscale", ScalingCallback, NULL );
+
+    var_Create( p_vout, "scale", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT
+                | VLC_VAR_ISCOMMAND );
+    text.psz_string = _("Scale factor");
+    var_Change( p_vout, "scale", VLC_VAR_SETTEXT, &text, NULL );
+    var_AddCallback( p_vout, "scale", ScalingCallback, NULL );
+
     /* Zoom object var */
     var_Create( p_vout, "zoom", VLC_VAR_FLOAT | VLC_VAR_ISCOMMAND |
                 VLC_VAR_HASCHOICE | VLC_VAR_DOINHERIT );
@@ -260,19 +273,6 @@ void vout_IntfInit( vout_thread_t *p_vout )
         var_TriggerCallback( p_vout, "aspect-ratio" );
     free( old_val.psz_string );
 
-    /* Add variables to manage scaling video */
-    var_Create( p_vout, "autoscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
-                | VLC_VAR_ISCOMMAND );
-    text.psz_string = _("Autoscale video");
-    var_Change( p_vout, "autoscale", VLC_VAR_SETTEXT, &text, NULL );
-    var_AddCallback( p_vout, "autoscale", ScalingCallback, NULL );
-
-    var_Create( p_vout, "scale", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT
-                | VLC_VAR_ISCOMMAND );
-    text.psz_string = _("Scale factor");
-    var_Change( p_vout, "scale", VLC_VAR_SETTEXT, &text, NULL );
-    var_AddCallback( p_vout, "scale", ScalingCallback, NULL );
-
     /* Add a variable to indicate if the window should be on top of others */
     var_Create( p_vout, "video-on-top", VLC_VAR_BOOL | VLC_VAR_DOINHERIT
                 | VLC_VAR_ISCOMMAND );