fix: Check gas limit before padding (#1734)

Author: m30m

apps/fortuna/Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name    = "fortuna"
-version = "6.4.0"
+version = "6.4.1"
 edition = "2021"
 
 [dependencies]

apps/fortuna/Cargo.toml

@@ -452,8 +452,6 @@ pub async fn process_event(
         backoff::Error::transient(anyhow!("Error estimating gas for reveal: {:?}", e))
     })?;
 
-    // Pad the gas estimate by 33%
-    let gas_estimate = gas_estimate.saturating_mul(4.into()) / 3;
 
     if gas_estimate > gas_limit {
         return Err(backoff::Error::permanent(anyhow!(
@@ -463,6 +461,9 @@ pub async fn process_event(
         )));
     }
 
+    // Pad the gas estimate by 25% after checking it against the gas limit
+    let gas_estimate = gas_estimate.saturating_mul(5.into()) / 4;
+
     let contract_call = contract
         .reveal_with_callback(
             event.provider_address,