[AST] APValue: Split the fast path of MakeUninit to be inline.
 - This change seems to be a tiny loss on 403.gcc/combine.c (.2%), but I think
   it is the right thing to do.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152330 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed