Fixing stale pointer problem in ELFObjectFile

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@174665 91177308-0d34-0410-b5e6-96231b3b80d8
Be sure to set the data offset to zero if we actually mmap the entire ELF file.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@174668 91177308-0d34-0410-b5e6-96231b3b80d8