Fix contract

Author: chipshort

contracts/ibc-callbacks/src/contract.rs

@@ -127,24 +127,26 @@ pub fn ibc_source_callback(
 #[entry_point]
 pub fn ibc_destination_callback(
     deps: DepsMut,
-    env: Env,
+    _env: Env,
     msg: IbcDestinationCallbackMsg,
 ) -> StdResult<IbcBasicResponse> {
     let mut counts = load_stats(deps.storage)?;
 
-    // Assert that we have the funds we expect.
+    // Assert that the receiver has the funds in the message.
     // This is just for testing purposes and to show that the funds are already available during
     // the callback.
-    for coin in &msg.funds {
-        let balance = deps
-            .querier
-            .query_balance(&env.contract.address, &coin.denom)?;
-        ensure!(
-            balance.amount >= coin.amount,
-            StdError::generic_err(format!(
-                "Didn't receive expected funds. expected: {coin}, have: {balance}"
-            ))
-        );
+    if let Some(transfer) = &msg.transfer {
+        for coin in &transfer.funds {
+            let balance = deps
+                .querier
+                .query_balance(&transfer.receiver, &coin.denom)?;
+            ensure!(
+                balance.amount >= coin.amount,
+                StdError::generic_err(format!(
+                    "Didn't receive expected funds. expected: {coin}, have: {balance}"
+                ))
+            );
+        }
     }
 
     // save the receive