Improve handling of malformed / dsc_extractor.bundle-processed binaries

[qu0dy]

Hi,

I have found that these https://github.com/Vector35/workflow_objc/blob/master/Core/AnalysisProvider.cpp#L22-L23 two analyzers raise out-of-bound exceptions.

Used LaunchServices binary extracted using https://github.com/keith/dyld-shared-cache-extractor from arm64 cache.

Will dig into it tomorrow and update the ticket.