When the autocomplete window opens and then discovers it has no results and...

When the autocomplete window opens and then discovers it has no results and closes it causes a nonpinned hotkey window to close because the window gets closed before becoming key. That confuses the very complex logic for autohiding. To make the smallest possible change, I do a dispatch async on the close to order it properly. Issue 6169.

sources/Autocomplete.m

@@ -674,7 +674,9 @@ const int kMaxResultContextWords = 4;
     [self reloadData:YES];
     if (!populateTimer_) {
         if (self.unfilteredModel.count == 0) {
-            [self closePopupWindow];
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [self closePopupWindow];
+            });
         } else {
             [self.delegate popupIsSearching:NO];
         }