Add parentheses around arithmetic in operand of '|'.

This avoids a operator precedence warning for mixing + and | in an
expression. I checked that this matches the definition in the Split
DWARF proposal.

Patch by Cong Liu!

Differential Revision: http://reviews.llvm.org/D17375

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261207 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed