Added default ctor to Selector.

REASON: Without a default ctor we cannot do "new Selector[xxx]" and similar
operations with ADTs that need to default constructor selectors.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50534 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed