move two more lists of protocols over to use ObjCList<ObjCProtocolDecl>,
simplifying code along the way and fixing a problem and memory leak or two.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@53876 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed