fixes crashes for invalid code, for example:

class Test {
    public var test(get, never):Int;
    public var get_test:Int;
}

Author: SlavaRa

External/Plugins/CodeRefactor/Provider/RenamingHelper.cs

@@ -49,6 +49,7 @@ static void RenameMember(ClassModel inClass, string name, string newName, bool o
             if (m == null) return;
             ASResult result = new ASResult();
             ASComplete.FindMember(name, inClass, result, FlagType.Dynamic | FlagType.Function, 0);
+            if (result.Member == null) return;
             queue.Add(new Rename(result, outputResults, newName));
         }