Warning fixes to operator precedence warnings.

Someone should double-check that I didn't somehow break ObjC 
serialization; I think the change there actually changes the semantics.

llvm-svn: 61098
diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index 3d9970d..cce8246 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -90,13 +90,13 @@
            = Constructors->function_begin();
          Con != Constructors->function_end(); ++Con) {
     if (cast<CXXConstructorDecl>(*Con)->isCopyConstructor(Context, TypeQuals) &&
-        (TypeQuals & QualType::Const != 0))
+        (TypeQuals & QualType::Const) != 0)
       return true;
     }
   } else if (CXXConstructorDecl *Constructor 
                = dyn_cast<CXXConstructorDecl>(*Lookup.first)) {
     return Constructor->isCopyConstructor(Context, TypeQuals) &&
-           (TypeQuals & QualType::Const != 0);
+           (TypeQuals & QualType::Const) != 0;
   }
   return false;
 }