iterating over an archive with object and non-object members that
would cause an Abort because to was not calling consumeError()
when the code was wanting to ignore a non-object file.
Found by Justin Bogner!
llvm-svn: 284867
We already fail with 'No such file or directory' when we try to open
the file -- if that doesn't exist. Also add a test to verify this behavior.
llvm-svn: 247744