If we fail to attach, return an error rather than returning the success or failure of sending the error packet.
If we fail to attach, return an error rather than returning the success or failure
of sending the error packet.


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@200732 91177308-0d34-0410-b5e6-96231b3b80d8

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