Fix some errors for the mssql support pull request

main.go

@@ -119,7 +119,6 @@ func (s *DB) Limit(value interface{}) *DB {
 
 func (s *DB) Offset(value interface{}) *DB {
 	return s.clone().search.offset(value).db
-	return s.clone().search.offset(value).db
 }
 
 func (s *DB) Order(value string, reorder ...bool) *DB {

main_test.go

@@ -311,13 +311,11 @@ func TestRows(t *testing.T) {
 	}
 
 	count := 0
-	if rows != nil {
-		for rows.Next() {
-			var name string
-			var age int64
-			rows.Scan(&name, &age)
-			count++
-		}
+	for rows.Next() {
+		var name string
+		var age int64
+		rows.Scan(&name, &age)
+		count++
 	}
 	if count != 2 {
 		t.Errorf("Should found two records with name 3")
@@ -452,7 +450,7 @@ func TestTimeWithZone(t *testing.T) {
 		name := "time_with_zone_" + strconv.Itoa(index)
 		user := User{Name: name, Birthday: vtime}
 
-		//mssql does not support time zones
+		// TODO mssql does not support time zones
 		if dialect := os.Getenv("GORM_DIALECT"); dialect == "mssql" {
 			user.Birthday = vtime.UTC()
 		}

query_test.go

@@ -2,9 +2,10 @@ package gorm_test
 
 import (
 	"fmt"
-	"github.com/jinzhu/now"
 	"reflect"
 
+	"github.com/jinzhu/now"
+
 	"testing"
 	"time"
 )
@@ -239,11 +240,7 @@ func TestOrderAndPluck(t *testing.T) {
 
 	var ages []int64
 	scopedb.Order("age desc").Pluck("age", &ages)
-	if ages != nil {
-		if ages[0] != 20 {
-			t.Errorf("The first age should be 20 when order with age desc")
-		}
-	} else {
+	if ages[0] != 20 {
 		t.Errorf("The first age should be 20 when order with age desc")
 	}