Clean up some gross code in the printer here. No more string stream
silliness, and actually use the existing facilities of raw_ostream to do
escaping.

This will also hopefully fix an assert when building with signed char
(MSVC I think).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126505 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed