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doh: fix memory-leak when doing a second DoH resolve

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Reported-by: James Fuller
Closes #20929
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Daniel Stenberg 2026-03-15 17:04:47 +01:00
parent f50446f6da
commit 32531f20f9
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lib/doh.c
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@ -448,6 +448,7 @@ CURLcode Curl_doh(struct Curl_easy *data, const char *hostname,
data->state.async.done = FALSE;
data->state.async.port = port;
data->state.async.ip_version = ip_version;
curlx_free(data->state.async.hostname);
data->state.async.hostname = curlx_strdup(hostname);
if(!data->state.async.hostname)
return CURLE_OUT_OF_MEMORY;