macosx: info panel: do not update UI if window is not loaded

modules/gui/macosx/VLCPlaylistInfo.m

@@ -34,7 +34,6 @@
 
     input_item_t *p_item;
 
-    BOOL b_awakeFromNib;
     BOOL b_stats;
 }
 @end
@@ -106,8 +105,6 @@
 
     [self.window setInitialFirstResponder: _uriLabel];
 
-    b_awakeFromNib = YES;
-
     b_stats = var_InheritBool(VLCIntf, "stats");
     if (!b_stats) {
         if ([_tabView numberOfTabViewItems] > 2)
@@ -131,7 +128,7 @@
 
 - (void)updateCocoaWindowLevel:(NSInteger)i_level
 {
-    if (self.window && [self.window isVisible] && [self.window level] != i_level)
+    if (self.isWindowLoaded && [self.window isVisible] && [self.window level] != i_level)
         [self.window setLevel: i_level];
 }
 
@@ -185,6 +182,9 @@
         p_item = _p_item;
     }
 
+    if (!self.isWindowLoaded)
+        return;
+
     if (!p_item) {
         /* Erase */
 #define SET( foo ) \
@@ -262,15 +262,17 @@ FREENULL( psz_##foo );
 
 - (void)updateStatistics
 {
-    if (!b_awakeFromNib || !b_stats)
+    if (!self.isWindowLoaded || !b_stats)
         return;
 
-    if ([self.window isVisible]) {
     if (!p_item || !p_item->p_stats) {
         [self initMediaPanelStats];
         return;
     }
 
+    if (![self.window isVisible])
+        return;
+
     vlc_mutex_lock(&p_item->p_stats->lock);
 
     /* input */
@@ -301,7 +303,6 @@ FREENULL( psz_##foo );
     [_lostAudioBuffersTextField setIntValue: p_item->p_stats->i_lost_abuffers];
 
     vlc_mutex_unlock(&p_item->p_stats->lock);
-    }
 }
 
 - (void)updateStreamsList