Fix PPC64 warning for missing parantheses. NFC.

llvm-svn: 302061
diff --git a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
index 305b87e..2c8e6c0 100644
--- a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp
@@ -516,9 +516,10 @@
   // targets of the Latch be the single exit block out of the loop. This needs
   // to be guaranteed by the callers of UnrollRuntimeLoopRemainder.
   BranchInst *LatchBR = cast<BranchInst>(Latch->getTerminator());
-  assert(LatchBR->getSuccessor(0) == Exit ||
-         LatchBR->getSuccessor(1) == Exit && "loop latch successor should be "
-                                             "exit block!");
+  assert(
+      (LatchBR->getSuccessor(0) == Exit || LatchBR->getSuccessor(1) == Exit) &&
+      "one of the loop latch successors should be "
+      "the exit block!");
   // Loop structure is the following:
   //
   // PreHeader