File libgit2-check-cert-validity.patch of Package libgit2.4084

commit b5c6a1b407b7f8b952bded2789593b68b1876211
Author: Etienne Samson <samson.etienne@gmail.com>
Date:   Wed Dec 21 21:24:33 2016 +0100

    http: check certificate validity before clobbering the error variable

diff --git a/src/transports/http.c b/src/transports/http.c
index f0efd95..b4418f6 100644
--- a/src/transports/http.c
+++ b/src/transports/http.c
@@ -602,13 +602,12 @@ static int http_connect(http_subtransport *t)
 	if ((!error || error == GIT_ECERTIFICATE) && t->owner->certificate_check_cb != NULL &&
 	    git_stream_is_encrypted(t->io)) {
 		git_cert *cert;
-		int is_valid;
+		int is_valid = (error == GIT_OK);
 
 		if ((error = git_stream_certificate(&cert, t->io)) < 0)
 			return error;
 
 		giterr_clear();
-		is_valid = error != GIT_ECERTIFICATE;
 		error = t->owner->certificate_check_cb(cert, is_valid, t->connection_data.host, t->owner->message_cb_payload);
 
 		if (error < 0) {