For member pointer conversions potentially involving derived-to-base
conversions, make sure that the (possibly) derived type is complete
before looking for base classes.

Finishes the fix for PR8801.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122363 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed