[analyzer] PostImplicitCall can also occur between CFGElements.

This avoids an assertion crash when we invalidate on a destructor call
instead of inlining it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160802 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed