Fix a broken assert found by -Wparentheses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141168 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index f580443..5b16f62 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -4714,7 +4714,7 @@
     // If this operand is already visited, reuse the prior result.
     P = PHIMap.lookup(OpInst);
     if (P) {
-      assert(!PHI || P == PHI && "inconsitent data flow");
+      assert((!PHI || P == PHI) && "inconsitent data flow");
       PHI = P;
       continue;
     }