From dc7778a24f36ef9cc7e47df82318bda034d278f1 Mon Sep 17 00:00:00 2001
From: Richard Ramos <info@richardramos.me>
Date: Tue, 9 Aug 2022 13:23:03 -0400
Subject: [PATCH] Use call instead of transfer in case receiver fallback
 exceeds 2300 gas

---
 contracts/Rln.sol | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/contracts/Rln.sol b/contracts/Rln.sol
index bd97416..1d9daf8 100644
--- a/contracts/Rln.sol
+++ b/contracts/Rln.sol
@@ -85,7 +85,8 @@ contract RLN {
 		members[_pubkeyIndex] = 0;
 
 		// refund deposit
-		receiver.transfer(MEMBERSHIP_DEPOSIT);
+		(bool sent, _) = receiver.call{value: MEMBERSHIP_DEPOSIT}("");
+        require(sent, "transfer failed");
 
 		emit MemberWithdrawn(pubkey, _pubkeyIndex);
 	}