add err checking for places where an error variable was assigned but not checked

zh/a_herf.go

@@ -43,6 +43,9 @@ func  htmlfile(filename string,next_path string,last_path string)(error){
        var add_string2 string = "\n<a href=\"./"+last_path+"\">下一页</a>\n"
        file.Seek(1,2)
        _,err=file.WriteString(add_string1)
+       if(err!=nil){
+           fmt.Println("err:",err)
+       }
        _,err=file.WriteString(add_string2)
        file.Seek(0,0)
        if(err!=nil){

zh/build_new.go

@@ -79,6 +79,9 @@ func (self *Visitor) md2html(arg map[string]string) error {
 		req.Header.Set("Authorization", "token "+token)
 		//
 		resp, err := client.Do(req)
+		if err!=nil {
+			fmt.Println("err:",err)
+		}
 
 		defer resp.Body.Close()