[ScopInfo] Fix r302231 to use logical or (||). NFC.

In r302231 we mistakenly use bitwise or (|) instead of logical
or (||). This patch fixes that.

Contributed-by: Sameer AbuAsal <sabuasal@codeaurora.org>

Differential Revision: https://reviews.llvm.org/D33337

llvm-svn: 303386