Bug #:

Submitted by:
Reviewed by:
- ParseForStatement(): Put back a test/assignment. My removal of
ParseExprStmt() was a bit over zealous:-(thanks to Chris for pointing it out)
- Add assert to VisitDeclStmt().
- Removed an out-of-date FIXME
- Added some curlies for a couple multi-line calls to Diag().

llvm-svn: 39528