Add increment of cur_idx in with_simulated_oracle_prices_before funct…

…ion (#606)

* Add increment of cur_idx in with_simulated_oracle_prices_before function

* Fix variable declaration in oracle_modules.cairo

src/oracle/oracle_modules.cairo

@@ -60,14 +60,15 @@ fn with_simulated_oracle_prices_before(oracle: IOracleDispatcher, params: Simula
             params.primary_tokens.len(), params.primary_prices.len()
         );
     }
-    let cur_idx = 0;
+    let mut cur_idx = 0;
     loop {
         if (cur_idx == params.primary_tokens.len()) {
             break ();
         }
         let token: ContractAddress = *params.primary_tokens.at(cur_idx);
         let price: Price = *params.primary_prices.at(cur_idx);
         oracle.set_primary_price(token, price);
+        cur_idx = cur_idx + 1;
     };
 }