Revert r251578.  I was in the middle of editing the commit message and decided to not commit the change, but accidentally committed it anyway.
Revert r251578.  I was in the middle of editing the commit message
and decided to not commit the change, but accidentally committed
it anyway.

This was based on a static analysis complaint; it thought there
was a code path where AdbClient::PushFile would call AdbClient::ReadSyncHeader
and AdbClient::ReadSyncHeader wouldn't set data_len.  But in that
case, the Error object returned will be Fail and we won't use
the data_len or response_id contents.



git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@251580 91177308-0d34-0410-b5e6-96231b3b80d8

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