In ExpressionEvaluationContextRecord manage LambdaMangle with a shared
pointer, otherwise we will double free it when ExpressionEvaluationContextRecord
gets copied.

Fixes crash in rdar://12645424 & http://llvm.org/PR14252

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167946 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed