Avoid repeating the return type

src/gui/search/searchjobwidget.cpp

@@ -385,7 +385,7 @@ QString SearchJobWidget::statusText(SearchJobWidget::Status st)
     case Status::NoResults:
         return tr("Search returned no results");
     default:
-        return QString();
+        return {};
     }
 }
 

src/gui/search/searchwidget.cpp

@@ -83,7 +83,7 @@ namespace
         case SearchJobWidget::Status::NoResults:
             return QLatin1String("task-attention");
         default:
-            return QString();
+            return {};
         }
     }
 }