Tracepointgen: Fix reading enums from multiple files

Don't stop searching enums if the enum partially matches.

Pick-to: 6.5
Change-Id: Idc2b45cee5a32994d55fe90c038938f0ad8b4a59
Reviewed-by: Antti Määttä <antti.maatta@qt.io>
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>

src/tools/tracepointgen/parser.cpp

@@ -307,10 +307,9 @@ QStringList Parser::findEnumValues(const QString &name, const QStringList &inclu
                             ret << trimmed;
                     }
 
-                    break;
+                    return ret;
                 }
             }
-            return ret;
         }
     }
     return ret;