Cleanups

Cleanups suggested by gometalinter tools.

query_test.go

@@ -3,11 +3,12 @@ package pgx_test
 import (
 	"bytes"
 	"database/sql"
-	"github.com/jackc/pgx"
 	"strings"
 	"testing"
 	"time"
 
+	"github.com/jackc/pgx"
+
 	"github.com/shopspring/decimal"
 )
 
@@ -784,7 +785,7 @@ func TestQueryRowCoreByteSlice(t *testing.T) {
 			t.Errorf("%d. Unexpected failure: %v (sql -> %v)", i, err, tt.sql)
 		}
 
-		if bytes.Compare(actual, tt.expected) != 0 {
+		if !bytes.Equal(actual, tt.expected) {
 			t.Errorf("%d. Expected %v, got %v (sql -> %v)", i, tt.expected, actual, tt.sql)
 		}