Merging r182441:

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r182441 | gclayton | 2013-05-21 17:10:28 -0700 (Tue, 21 May 2013) | 5 lines

<rdar://problem/13455021>

Another fix to make sure that if we aren't able to extract an object file for any reason, we don't crash when trying to parse the debug map info.


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llvm-svn: 182522