mac: runtime warning on debug build of browser example about libqcorewlanbearer_debug.dylib

Got the following warning when building and running browser example in creator
objc[58645]: Class QNSListener is implemented in both /Users/ikipou/Qt5.0.1/5.0.1/clang_64/plugins/bearer/libqcorewlanbearer.dylib and /Users/ikipou/Qt5.0.1/5.0.1/clang_64/plugins/bearer/libqcorewlanbearer_debug.dylib. One of the two will be used. Which one is undefined.

Not sure which component this bug should go though.