do not defer rows.Close until TestMSSQLTypes is finished

This allows driver to reuse the same connection for all tests of
TestMSSQLTypes. That makes TestMSSQLTypes faster.

Updates alexbrainman#81

Author: alexbrainman

mssql_test.go

@@ -715,30 +715,31 @@ func TestMSSQLTypes(t *testing.T) {
 		tests = append(tests, typeMSSQL2008Tests...)
 	}
 	for _, r := range tests {
-
-		rows, err := db.Query(r.query)
-		if err != nil {
-			t.Errorf("db.Query(%q) failed: %v", r.query, err)
-			continue
-		}
-		defer rows.Close()
-		for rows.Next() {
-			var got interface{}
-			err := rows.Scan(&got)
+		func() {
+			rows, err := db.Query(r.query)
 			if err != nil {
-				t.Errorf("rows.Scan for %q failed: %v", r.query, err)
-				continue
+				t.Errorf("db.Query(%q) failed: %v", r.query, err)
+				return
 			}
-			err = r.match(got)
+			defer rows.Close()
+			for rows.Next() {
+				var got interface{}
+				err := rows.Scan(&got)
+				if err != nil {
+					t.Errorf("rows.Scan for %q failed: %v", r.query, err)
+					return
+				}
+				err = r.match(got)
+				if err != nil {
+					t.Errorf("test %q failed: %v", r.query, err)
+				}
+			}
+			err = rows.Err()
 			if err != nil {
-				t.Errorf("test %q failed: %v", r.query, err)
+				t.Error(err)
+				return
 			}
-		}
-		err = rows.Err()
-		if err != nil {
-			t.Error(err)
-			continue
-		}
+		}()
 	}
 
 	for _, query := range typeTestsToFail {