<rdar://problem/10647191>
<rdar://problem/10647191>

Removed an extra call to close that was causing problems and also
now use the Host::File class to open the file.



git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@147638 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb