[clang-tidy] Update fuchsia-multiple-inheritance to not fail

Updating the fuchsia-multiple-inheritance to gracefully handle unknown
record types (e.g. templatized classes) by simply continuing, rather
than asserting and failing.

Fixes PR36052.

Differential Revision: https://reviews.llvm.org/D43223

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@325015 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed