objective-C modern translation: Fix another random translation bug
involving property getter expressions on rhs of property setter.
// rdar://13138459


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174729 91177308-0d34-0410-b5e6-96231b3b80d8
Remove stale instance variable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174730 91177308-0d34-0410-b5e6-96231b3b80d8