[Support] Fix ErrorOr assertion when /proc/cpuinfo doesn't exist.

The ErrorOr should not be dereferenced on the error path.

Patch by Jacob Young

Reviewers: tejohnson

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D32032

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300267 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed