MINOR: http: remove the pointer to the error snapshot in http_capture_bad_message()

It's not needed anymore as we know the side thanks to the channel. This
will allow the proxy generic code to better manage the error snapshots.
diff --git a/include/proto/proto_http.h b/include/proto/proto_http.h
index 49cb501..7849e15 100644
--- a/include/proto/proto_http.h
+++ b/include/proto/proto_http.h
@@ -99,7 +99,7 @@
 void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos);
 void http_perform_server_redirect(struct stream *s, struct stream_interface *si);
 void http_return_srv_error(struct stream *s, struct stream_interface *si);
-void http_capture_bad_message(struct proxy *proxy, struct error_snapshot *es, struct stream *s,
+void http_capture_bad_message(struct proxy *proxy, struct stream *s,
                               struct http_msg *msg,
 			      enum h1_state state, struct proxy *other_end);
 unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,