Fix a pair of array index checks.

Patch by Marius Wachtler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196560 91177308-0d34-0410-b5e6-96231b3b80d8
Fix an index array check.

Patch by Marius Wachtler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196561 91177308-0d34-0410-b5e6-96231b3b80d8