For ObjCAtCatchStmt, removed field 'NextAtCatchStmt' (which referenced the next @catch)
and put the the next ObjcAtCatchStmt* as part of SubExprs.  This fixes a bug with
iterating over the children of ObjcAtCatch, where the next @catch was not
properly being iterated over as a child.

Altered serialization of ObjCAtCatchStmt to reflect this new layout of
its subexpressions, and fixed an ownership issue with the next @catch not
being serialized as an owned pointer.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46647 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed