Merge pull request #337 from rsksmart/fix/gbi2684/lpc_resignation_bug

fix/GBI_2684/LBC resignation bug for pegout only LPs

Author: AndresQuijano

contracts/LiquidityBridgeContractV2.sol

@@ -347,8 +347,15 @@ contract LiquidityBridgeContractV2 is Initializable, OwnableUpgradeable, Reentra
     /**
         @dev Used to resign as a liquidity provider
      */
-    function resign() external onlyRegistered {
-        require(resignationBlockNum[msg.sender] == 0, "LBC023");
+    function resign() external {
+        require(
+            resignationBlockNum[msg.sender] == 0,
+            "LBC023"
+        );
+        require(
+            (collateral[msg.sender] > 0 || pegoutCollateral[msg.sender] > 0),
+            "LBC001"
+        );
         resignationBlockNum[msg.sender] = block.number;
         emit Resigned(msg.sender);
     }