[clang-tidy] Resolve cppcoreguidelines-pro-type-member-init false positive

Summary: https://bugs.llvm.org/show_bug.cgi?id=33557

Reviewers: Eugene.Zelenko, alexfh, aaron.ballman, hokein

Reviewed By: aaron.ballman, hokein

Subscribers: cfe-commits, nemanjai, xazax.hun, kbarton

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D34932

llvm-svn: 307040