Add some missing parentheses, from Anton Yartsev

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106101 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseDecl.cpp b/lib/Parse/ParseDecl.cpp
index 5d52d8b..532aff7 100644
--- a/lib/Parse/ParseDecl.cpp
+++ b/lib/Parse/ParseDecl.cpp
@@ -3465,7 +3465,7 @@
     default:
       break;
     }
-  } else if (Tok.getIdentifierInfo() == Ident_pixel &&
+  } else if ((Tok.getIdentifierInfo() == Ident_pixel) &&
              DS.isTypeAltiVecVector()) {
     isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID);
     return true;