goas: remove found flag from balance insert helpers

goas/cl/cl/src/balance.rs

@@ -67,42 +67,35 @@ impl BalanceWitness {
     }
 
     pub fn insert_positive(&mut self, unit: Unit, value: Value) {
-        let mut found = false;
         for unit_bal in self.balances.iter_mut() {
             if unit_bal.unit == unit {
-                found = true;
                 unit_bal.pos += value;
-                break;
+                return;
             }
         }
 
-        if !found {
+        // Unit was not found, so we must create one.
         self.balances.push(UnitBalance {
             unit,
             pos: value,
             neg: 0,
         });
     }
-    }
 
     pub fn insert_negative(&mut self, unit: Unit, value: Value) {
-        let mut found = false;
         for unit_bal in self.balances.iter_mut() {
             if unit_bal.unit == unit {
-                found = true;
                 unit_bal.neg += value;
-                break;
+                return;
             }
         }
 
-        if !found {
         self.balances.push(UnitBalance {
             unit,
             pos: 0,
             neg: value,
         });
     }
-    }
 
     pub fn clear_zeros(&mut self) {
         let mut i = 0usize;

goas/cl/cl/tests/simple_transfer.rs

@@ -36,7 +36,6 @@ fn test_simple_transfer() {
 
     let bundle = cl::BundleWitness {
         partials: vec![ptx_witness],
-        balance_blinding: BalanceWitness::random_blinding(&mut rng),
     };
 
     assert!(bundle.balance().is_zero())