style: lint stableswap the same as the rest of osmosis (#5105)

* sync

* lint stableswap in the same manner as any other component of Osmosis

* add changelog entry

x/concentrated-liquidity/tick_test.go

@@ -436,7 +436,7 @@ func (s *KeeperTestSuite) TestGetTickInfo() {
 				s.Require().Equal(model.TickInfo{}, tickInfo)
 			} else {
 				s.Require().NoError(err)
-				_, err = clKeeper.GetPoolById(s.Ctx, validPoolId)
+				clPool, err = clKeeper.GetPoolById(s.Ctx, validPoolId)
 				s.Require().NoError(err)
 				s.Require().Equal(test.expectedTickInfo, tickInfo)
 			}

x/valset-pref/keeper_test.go

@@ -70,8 +70,9 @@ func (suite *KeeperTestSuite) GetDelegationRewards(ctx sdk.Context, valAddrStr s
 }
 
 func (suite *KeeperTestSuite) SetupDelegationReward(delegator sdk.AccAddress, preferences []types.ValidatorPreference, existingValAddrStr string, setValSetDel, setExistingdel bool) {
+	var ctx sdk.Context
 	// incrementing the blockheight by 1 for reward
-	ctx := suite.Ctx.WithBlockHeight(suite.Ctx.BlockHeight() + 1)
+	ctx = suite.Ctx.WithBlockHeight(suite.Ctx.BlockHeight() + 1)
 
 	if setValSetDel {
 		// only necessary if there are tokens delegated