Workaround for infinite recursion in InitOSO->GetByteSize->GetSymbolVendor.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185491 91177308-0d34-0410-b5e6-96231b3b80d8
Fix ObjectFileELF crc32 code used when no build id is present.

Differential Revision: http://llvm-reviews.chandlerc.com/D1081

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@185494 91177308-0d34-0410-b5e6-96231b3b80d8