vout: simplify window allocation following splitter separation

src/video_output/video_output.c

@@ -614,16 +614,17 @@ vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout,
 {
     vout_window_cfg_t cfg_override = *cfg;
 
+    assert(vout->p->splitter_name == NULL);
     if (!var_InheritBool( vout, "embedded-video"))
         cfg_override.is_standalone = true;
 
-    if (vout->p->window.is_unused && vout->p->window.object) {
-        assert(!vout->p->splitter_name);
+    vout_window_t *window = vout->p->window.object;
+
+    if (vout->p->window.is_unused && window != NULL) {
         if (!cfg_override.is_standalone == !vout->p->window.cfg.is_standalone &&
             cfg_override.type           == vout->p->window.cfg.type) {
             /* Reuse the stored window */
             msg_Dbg(vout, "Reusing previous vout window");
-            vout_window_t *window = vout->p->window.object;
             if (cfg_override.width  != vout->p->window.cfg.width ||
                 cfg_override.height != vout->p->window.cfg.height)
                 vout_window_SetSize(window,
@@ -633,16 +634,13 @@ vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout,
             return window;
         }
 
-        vout_window_Delete(vout->p->window.object);
+        vout_window_Delete(window);
         vout->p->window.is_unused = true;
         vout->p->window.object    = NULL;
     }
 
-    vout_window_t *window = vout_window_New(VLC_OBJECT(vout), "$window",
-                                            &cfg_override);
-    if (!window)
-        return NULL;
-    if (!vout->p->splitter_name) {
+    window = vout_window_New(VLC_OBJECT(vout), "$window", &cfg_override);
+    if (window != NULL) {
         vout->p->window.is_unused = false;
         vout->p->window.cfg       = cfg_override;
         vout->p->window.object    = window;