Menus, Popup: Amend c3f8f4d for static analyzer warning ("condition always true"). (#7325)

imgui.cpp

@@ -10891,8 +10891,8 @@ void ImGui::ClosePopupToLevel(int remaining, bool restore_focus_to_window_under_
     if (restore_focus_to_window_under_popup && prev_popup.Window)
     {
         ImGuiWindow* popup_window = prev_popup.Window;
-        ImGuiWindow* focus_window = (popup_window && popup_window->Flags & ImGuiWindowFlags_ChildMenu) ? popup_window->ParentWindow : prev_popup.RestoreNavWindow;
-        if (focus_window && !focus_window->WasActive && popup_window)
+        ImGuiWindow* focus_window = (popup_window->Flags & ImGuiWindowFlags_ChildMenu) ? popup_window->ParentWindow : prev_popup.RestoreNavWindow;
+        if (focus_window && !focus_window->WasActive)
             FocusTopMostWindowUnderOne(popup_window, NULL, NULL, ImGuiFocusRequestFlags_RestoreFocusedChild); // Fallback
         else
             FocusWindow(focus_window, (g.NavLayer == ImGuiNavLayer_Main) ? ImGuiFocusRequestFlags_RestoreFocusedChild : ImGuiFocusRequestFlags_None);