http: accept https:// proxies again

Since 663d7abe07ea (http: reject unsupported proxy URL schemes, 2026-05-05), set_curl_proxy_type() returns 0 only for the "http" and SOCKS variants via dedicated early returns, and -1 for everything else. The "https" branch configures the CURL handle for HTTPS proxying but then falls through to the trailing `return -1` intended for unknown schemes, so the caller in get_curl_handle() treats a perfectly valid https:// proxy URL as unsupported and refuses to use it. Noticed while looking into a Coverity report against the same function; the unchecked curl_easy_setopt() return values it flags are orthogonal to this fix. Assisted-by: Opus 4.7 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Jun 27, 2026 at 17:17 UTC f6c8bae5cdba1836d76e7eed3b41547d49869f06
1 file changed +2
http.c
+2
@@ -802,6 +802,8 @@ static int set_curl_proxy_type(CURL *result, const char *protocol)
802 if (has_proxy_cert_password())
803 curl_easy_setopt(result, CURLOPT_PROXY_KEYPASSWD,
804 proxy_cert_auth.password);
805 +
806 + return 0;
807 }
808
809 return -1;