stardict Segmentation fault (core dumped)

[Lin Xiao]

Description:
stardict segfault frequently due to uninitialized pointer from stardict-youdaodict-plugin

Additional info:
Affected Version: 3.0.7+git20211225+dfsg-1

Steps to reproduce:
1.start stardict
2.enter random long string in the search field which is unlikely to be a real word(e.g. 'aaafdsfdsdfsfaasfda')
3.delete and reenter some chars back and forth repeatedly
4.stardict will segfault very quickly

[Lin Xiao (xliefssy)]

--- a/dict/stardict-plugins/stardict-youdaodict-plugin/stardict_youdaodict.cpp 2022-10-04 16:42:39.035798471 +0800
+++ b/dict/stardict-plugins/stardict-youdaodict-plugin/stardict_youdaodict.cpp 2022-10-09 10:02:34.040190482 +0800
@@ -200,6 +200,7 @@

        QueryInfo *qi = (QueryInfo *)userdata;
        NetDictResponse *resp = new NetDictResponse;
+ resp->data = nullptr;
        resp->bookname = _("www.YouDao.com");
        resp->booklink = "http://www.youdao.com";
        resp->word = qi->word; // So neen't free qi->word;