In StringLiteralParser::init, make sure we emit an error when
failing to lex the string, as suggested by Eli.

Part of rdar://11305263.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156081 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed