<rdar://problem/13468295>

Show an error message when we have a corrupt mach-o file where the LC_SEGMENT or LC_SEGMENT_64 load command have file offsets or file offsets + sizes that extend beyond the end of the file.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@179605 91177308-0d34-0410-b5e6-96231b3b80d8