gwl: Simplify appGroup windowRemoved method

It makes sense to call the callback to clean the appGroup if willUnmount is set true as well, however no need to only perform updates to the groupstate otherwise considering things like removing thumbnails have to be performed anyways, and considering the appGroup, in case of no open windows in the appGroup, or willUnmount is set, will be removed anyways, it likely shouldn't cause issues.

Author: anaximeno

files/usr/share/cinnamon/applets/[email protected]/appGroup.js

@@ -995,36 +995,36 @@ var AppGroup = class AppGroup {
     }
 
     windowRemoved(metaWorkspace, metaWindow, refWindow, cb) {
-        if (refWindow === -1) return;
+        if (!metaWindow) return;
 
         this.signals.disconnect('notify::title', metaWindow);
         this.signals.disconnect('notify::appears-focused', metaWindow);
         this.signals.disconnect('notify::icon', metaWindow);
         this.signals.disconnect('notify::progress', metaWindow);
 
-        const metaWindows = this.groupState.metaWindows.filter((w) => w != metaWindow);        
+        const metaWindows = this.groupState.metaWindows.filter((w) => w != metaWindow);
 
         if (this.progressOverlay.visible) this.onProgressChange();
 
-        if (!this.groupState.willUnmount) {
-            const lastFocused = this.groupState.lastFocused === metaWindow
-                ? getLastFocusedWindow(metaWindows)
-                : this.groupState.lastFocused;
-            this.groupState.set({metaWindows: metaWindows, lastFocused: lastFocused}, true);
-            this.onWindowTitleChanged(lastFocused);
-            if (this.hoverMenu) this.groupState.trigger('removeThumbnailFromMenu', metaWindow);
-            this.calcWindowNumber();
-        }
+        const lastFocused = this.groupState.lastFocused === metaWindow
+            ? getLastFocusedWindow(metaWindows)
+            : this.groupState.lastFocused;
+
+        this.groupState.set({metaWindows: metaWindows, lastFocused: lastFocused}, true);
+
+        if (lastFocused) this.onWindowTitleChanged(lastFocused);
 
-        if (metaWindows.length === 0) {
+        if (this.hoverMenu) this.groupState.trigger('removeThumbnailFromMenu', metaWindow);
+
+        this.calcWindowNumber();
+
+        if ((metaWindows.length === 0 || this.groupState.willUnmount) && typeof cb === 'function') {
             // This is the last window, so this group needs to be destroyed. We'll call back windowRemoved
             // in workspace to put the final nail in the coffin.
-            if (typeof cb === 'function') {
-                if (this.hoverMenu && this.groupState.isFavoriteApp) {
-                    this.groupState.trigger('removeThumbnailFromMenu', metaWindow);
-                }
-                cb(this.groupState.appId, this.groupState.isFavoriteApp);
+            if (this.hoverMenu && this.groupState.isFavoriteApp) {
+                this.groupState.trigger('removeThumbnailFromMenu', metaWindow);
             }
+            cb(this.groupState.appId, this.groupState.isFavoriteApp);
         }
     }