Fix random crashes in http_cleanup()

For some reason, http_cleanup was running all active slots, which could
lead in situations where a freed slot would be accessed in
fill_active_slots. OTOH, we are cleaning up, which means the caller
doesn't care about pending requests. Just forget about them instead
or running them.

Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http.c

@@ -281,23 +281,15 @@ void http_init(void)
 void http_cleanup(void)
 {
 	struct active_request_slot *slot = active_queue_head;
-#ifdef USE_CURL_MULTI
-	char *wait_url;
-#endif
 
 	while (slot != NULL) {
 		struct active_request_slot *next = slot->next;
+		if (slot->curl != NULL) {
 #ifdef USE_CURL_MULTI
-		if (slot->in_use) {
-			curl_easy_getinfo(slot->curl,
-					  CURLINFO_EFFECTIVE_URL,
-					  &wait_url);
-			fprintf(stderr, "Waiting for %s\n", wait_url);
-			run_active_slot(slot);
-		}
+			curl_multi_remove_handle(curlm, slot->curl);
 #endif
-		if (slot->curl != NULL)
 			curl_easy_cleanup(slot->curl);
+		}
 		free(slot);
 		slot = next;
 	}