Don't mark a type specifier as "owned" if there is no declaration to own.

This simplifies error recovery elsewhere, eliminating the crash in
<rdar://problem/13853540>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181846 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed