pingcap/parser/ast code update

[ycg]

"github.com/pingcap/parser/ast"

是不是pingcap代码更新了导致了这个问题？

error is：
..\go\src\github.com\siddontang\go-mysql\canal\expr.go:11:19: cannot use newValueExpr (type func(interface {}) ast.ValueExpr) as type func(interface {}, string, string) ast.ValueExpr in assignment

[dveeden]

The parser has been updated (probably many times) since this issue was created, for example in #948
So I assume this was resolved.