From 6145ac2da7fde593b8314f911e817bf36f378886 Mon Sep 17 00:00:00 2001
From: Ricardo Guilherme Schmidt <3esmit@gmail.com>
Date: Wed, 5 Sep 2018 22:18:37 -0300
Subject: [PATCH] supress warning in low level call

---
 contracts/registry/UsernameRegistrar.sol | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/contracts/registry/UsernameRegistrar.sol b/contracts/registry/UsernameRegistrar.sol
index 496c194..e9c826d 100644
--- a/contracts/registry/UsernameRegistrar.sol
+++ b/contracts/registry/UsernameRegistrar.sol
@@ -126,8 +126,9 @@ contract UsernameRegistrar is Controlled, ApproveAndCallFallBack {
         } else {
             require(msg.sender == account.owner, "Not the former account owner.");
             address newOwner = ensRegistry.owner(ensNode);
-            //low level call, case dropUsername not implemented or failing, proceed release.
-            newOwner.call(
+            //low level call, case dropUsername not implemented or failing, proceed release. 
+            //invert to supress warning
+            !newOwner.call( 
                 abi.encodeWithSignature(
                     "dropUsername(bytes32)",
                     _label