干掉xcode 4.2里的performselector警告

xcode 4.2非常可恶,原来的代码里有调用performselector:withObject:的地方无一例外获得一个警告:

Semantic Issue
PerformSelector may cause a leak because its selector is unknown

warning倒是不影响程序运行,但是这人要是有点代码小洁癖的话,那日子就没法过了,这warning怎么看都碍眼。所以必须得想办法把它弄没了:

#pragma clang diagnostic push
#pragma clang diagnostic ignored \"-Warc-performSelector-leaks\"
    [self performSelector:nextView];
#pragma clang diagnostic pop

世界清静啦