修改errors new方法直接返回error

pkg/errors/code.go

@@ -82,10 +82,10 @@ func ParseCoder(err error) gcode.Code {
 	return CodeUnknown
 }
 
-func New( code int, message string, reference string) gcode.Code {
-	return BizCode{
+func New( code int, message string, reference string) error {
+	return gerror.NewCode(BizCode{
 		C:    code,
 		M: message,
 		Ref : reference,
-	}
+	})
 }
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