diff --git a/src/pkg/database/sql/sql.go b/src/pkg/database/sql/sql.go
old mode 100644
new mode 100755
index b87f57f92f3..b0cba949c6b
--- a/src/pkg/database/sql/sql.go
+++ b/src/pkg/database/sql/sql.go
@@ -311,7 +311,10 @@ func (db *DB) prepare(query string) (stmt *Stmt, err error) {
 	if err != nil {
 		return nil, err
 	}
-	defer db.putConn(ci, err)
+	defer func() {
+		db.putConn(ci, err)
+	}()
+
 	si, err := ci.Prepare(query)
 	if err != nil {
 		return nil, err
@@ -342,7 +345,9 @@ func (db *DB) exec(query string, args []interface{}) (res Result, err error) {
 	if err != nil {
 		return nil, err
 	}
-	defer db.putConn(ci, err)
+	defer func() {
+		db.putConn(ci, err)
+	}()
 
 	if execer, ok := ci.(driver.Execer); ok {
 		dargs, err := driverArgs(nil, args)