[comment parsing]: Removes an unsafe API whose
use can cause crash. No test is available. It is uncovered
by code browsing.  // rdar://14348205


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@185732 91177308-0d34-0410-b5e6-96231b3b80d8
Remove referece type onproperty of abstract
class type. // rdar://14261999


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@185734 91177308-0d34-0410-b5e6-96231b3b80d8