[clang-diff] Properly clear the selection in HTML diff

Reviewers: arphaman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D37072

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@311575 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed