Fix typo

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@202254 91177308-0d34-0410-b5e6-96231b3b80d8
Add a StmtPrinter test for implicit and explicit conversion operator calls.

Put back a comment that I removed too aggressively.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@202255 91177308-0d34-0410-b5e6-96231b3b80d8