Add missing word in comment.

From-SVN: r112702

gcc/gimplify.c

@@ -5703,7 +5703,7 @@ gimplify_expr (tree *expr_p, tree *pre_p, tree *post_p,
 	  /* Historically, the compiler has treated a bare
 	     reference to a volatile lvalue as forcing a load.  */
 	  tree type = TYPE_MAIN_VARIANT (TREE_TYPE (*expr_p));
-	  /* Normally, we do want to create a temporary for a
+	  /* Normally, we do not want to create a temporary for a
 	     TREE_ADDRESSABLE type because such a type should not be
 	     copied by bitwise-assignment.  However, we make an
 	     exception here, as all we are doing here is ensuring that