CF-retain/release checker:
- Fix regression reported in <rdar://problem/6452745>.  After a null check, null references to resources should not have a retain count.  This regression was caused by removing the call to "GRTransferFuncs::EvalAssume" in BasicConstraintManager.
- Added a test case to test this behavior.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61155 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed