MC: whitespace

Fix indentation, remove unnecessary line.  NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200158 91177308-0d34-0410-b5e6-96231b3b80d8
AsmParser: improve diagnostics for invalid variants

An emitted diagnostic for an invalid relocation variant would place the caret on
the token following the relocation variant indicator or at the end of the line
if there was no following token.  This change corrects the placement of the
caret to point to the token.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200159 91177308-0d34-0410-b5e6-96231b3b80d8