Popups: removed an apparently unnecessary test in CloseInactivePopups() that broke Combo boxes inside menus (#272)

imgui.cpp

@@ -3172,7 +3172,7 @@ static void CloseInactivePopups()
     if (g.OpenedPopupStack.empty())
         return;
 
-    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it
+    // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
     // Don't close our own child popup windows
     int n = 0;
     if (g.FocusedWindow)
@@ -3184,12 +3184,8 @@ static void CloseInactivePopups()
                 continue;
             IM_ASSERT((popup.Window->Flags & ImGuiWindowFlags_Popup) != 0);
             if (popup.Window->Flags & ImGuiWindowFlags_ChildWindow)
-            {
-                if (g.FocusedWindow->RootWindow != popup.Window->RootWindow)
-                    break;
-            }
-            else
-            {
+                continue;
+
             bool has_focus = false;
             for (int m = n; m < g.OpenedPopupStack.Size && !has_focus; m++)
                 has_focus = (g.OpenedPopupStack[m].Window && g.OpenedPopupStack[m].Window->RootWindow == g.FocusedWindow->RootWindow);
@@ -3197,7 +3193,7 @@ static void CloseInactivePopups()
                 break;
         }
     }
-    }
+    if (n < g.OpenedPopupStack.Size)   // This test is not required but it allows to set a useful breakpoint on the line below
         g.OpenedPopupStack.resize(n);
 }