Linux FB: check that the vout is not windowed

modules/video_output/fb.c

@@ -179,6 +179,9 @@ static int Open(vlc_object_t *object)
     vout_display_t     *vd = (vout_display_t *)object;
     vout_display_sys_t *sys;
 
+    if (vout_display_IsWindowed(vd))
+        return VLC_EGENERIC;
+
     /* Allocate instance and initialize some members */
     vd->sys = sys = calloc(1, sizeof(*sys));
     if (!sys)
@@ -254,7 +257,6 @@ static int Open(vlc_object_t *object)
         Close(VLC_OBJECT(vd));
         return VLC_EGENERIC;
     }
-    vout_display_DeleteWindow(vd, NULL);
 
     /* */
     video_format_t fmt;