Fix bug #17526111 Keyboard should dismiss when Settings search query is submitted

- dismiss keyboard when the query is submitted by returning the correct value to
onQueryTextSubmit()

Change-Id: I3da0606ea7c5e65c860784a867a54ad30589b3a7

src/com/android/settings/dashboard/SearchResultsSummary.java

@@ -279,7 +279,8 @@ public class SearchResultsSummary extends Fragment {
         setSuggestionsVisibility(false);
         updateSearchResults();
         saveQueryToDatabase();
-        return true;
+
+        return false;
     }
 
     public boolean onQueryTextChange(String query) {