More cleanups in DoStmt. The NodeSets are now vectors instead of sets, since
node caching in GREngine will guarantee that we do not insert a node twice into
a nodeset.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@46071 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed