New warning in clang 3.8svn breaks compiling ThirdParty/libJPG/jpgd.cpp

Well, jpgd.cpp has been used since 4.0, so I assume it would happen in every version.

https://github.com/EpicGames/UnrealEngine/blob/4.0/Engine/Source/Developer/ImageWrapper/Private/JpegImageWrapper.cpp#L21

Not sure how this is supposed to help. It’s just something that should be fixed before the llvm/clang 3.8 releae. Considering 3.7 was only released about 2 days ago, that will be quite some time in the future, so lots of time until then…