lint - fix all nakedret

(cherry picked from commit 4bbb553)

Author: atercattus

canal/sync.go

@@ -227,7 +227,7 @@ func parseStmt(stmt ast.StmtNode) (ns []*node) {
 		}
 		ns = []*node{n}
 	}
-	return
+	return ns
 }
 
 func (c *Canal) updateTable(db, table string) (err error) {

mysql/field.go

@@ -130,7 +130,7 @@ func (f *Field) Parse(p FieldData) (err error) {
 		f.DefaultValue = p[pos:(pos + int(f.DefaultValueLength))]
 	}
 
-	return
+	return nil
 }
 
 func (p FieldData) Parse() (f *Field, err error) {

replication/row_event.go

@@ -1159,7 +1159,8 @@ func (e *RowsEvent) decodeValue(data []byte, tp byte, meta uint16) (v interface{
 	default:
 		err = fmt.Errorf("unsupport type %d in binlog and don't know how to handle", tp)
 	}
-	return
+
+	return v, n, err
 }
 
 func decodeString(data []byte, length int) (v string, n int) {