fix(dr): convert gas limits to u128 to prevent overflow

Also satisfy clippy.

contract/src/msgs/data_requests/execute/post_request.rs

@@ -29,8 +29,8 @@ impl ExecuteHandler for execute::post_request::Execute {
         // Take the funds from the user
         let token = TOKEN.load(deps.storage)?;
         let funds = cw_utils::must_pay(&info, &token)?;
-        let required =
-            Uint128::from(self.posted_dr.exec_gas_limit + self.posted_dr.tally_gas_limit) * self.posted_dr.gas_price;
+        let required = (Uint128::from(self.posted_dr.exec_gas_limit) + Uint128::from(self.posted_dr.tally_gas_limit))
+            * self.posted_dr.gas_price;
         if funds < required {
             return Err(ContractError::InsufficientFunds(
                 required,

contract/src/msgs/data_requests/test_helpers.rs

@@ -95,6 +95,7 @@ impl TestInfo {
         seda_payload: Vec<u8>,
         payback_address: Vec<u8>,
         env_height: u64,
+        funds: Option<u128>,
     ) -> Result<String, ContractError> {
         let msg = execute::post_request::Execute {
             posted_dr,
@@ -111,7 +112,7 @@ impl TestInfo {
         self.set_block_height(env_height);
 
         // someone posts a data request
-        let res: PostRequestResponsePayload = self.execute_with_funds(sender, &msg, 20)?;
+        let res: PostRequestResponsePayload = self.execute_with_funds(sender, &msg, funds.unwrap_or(20))?;
         assert_eq!(
             env_height, res.height,
             "chain height does not match data request height"