http2:set_transfer_url() return early on OOM
If curl_url() returns NULL this should return early to avoid mistakes - even if right now the subsequent function invokes are all OK. Coverity (wrongly) pointed out this as a NULL deref. Closes #8100
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@ -505,10 +505,13 @@ static int set_transfer_url(struct Curl_easy *data,
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struct curl_pushheaders *hp)
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{
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const char *v;
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CURLU *u = curl_url();
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CURLUcode uc;
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char *url = NULL;
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int rc = 0;
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CURLU *u = curl_url();
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if(!u)
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return 5;
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v = curl_pushheader_byname(hp, ":scheme");
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if(v) {
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