Don't double-destroy constructors defined out-of-line. This is a

Don't double-destroy constructors defined out-of-line. This is a
half-solution; the real solution is coming when constructors and
destructors are treated like all other functions by ActOnDeclarator.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61037 91177308-0d34-0410-b5e6-96231b3b80d8