ConnectionFileDescriptor::Connect()'s handling of the "fd://" method
was broken in r214984 by the addition of an unconditional error
return at the start of the code block handling this method.  Remove
the errant lines.
<rdar://problem/18416691> 


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@218291 91177308-0d34-0410-b5e6-96231b3b80d8