remote-curl: handle URLs without protocol
Generally remote-curl would never see a URL that did not have "proto:" at the beginning, as that is what tells git to run the "git-remote-proto" helper (and git-remote-http, etc, are aliases for git-remote-curl). However, the special syntax "proto::something" will run git-remote-proto with only "something" as the URL. So a malformed URL like: http::/example.com/repo.git will feed the URL "/example.com/repo.git" to git-remote-http. The resulting URL has no protocol, but the code added by 372370f1 (http: use credential API to handle proxy authentication, 2016-01-26) does not handle this case and segfaults. For the purposes of this code, we don't really care what the exact protocol; only whether or not it is https. So let's just assume that a missing protocol is not, and curl will handle the real error (which is that the URL is nonsense). Signed-off-by: NJeff King <peff@peff.net> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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