# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 2018-05-11 14:31:51
# Node ID 312d7d14d44e8fa0a8d032df519c9191db22f618
# Parent  8ba0344f9fb145f5b9b909f1211defc9e0793f68

revlog: handle error from node lookup

I missed this in D3499. Thanks to Yuya for spotting it.

Differential Revision: https://phab.mercurial-scm.org/D3530

diff --git a/mercurial/cext/revlog.c b/mercurial/cext/revlog.c
--- a/mercurial/cext/revlog.c
+++ b/mercurial/cext/revlog.c
@@ -1285,7 +1285,9 @@ static int nt_shortest(indexObject *self
 		if (v < 0) {
 			const char *n;
 			v = -(v + 1);
-			n = index_node(self, v);
+			n = index_node_existing(self, v);
+			if (n == NULL)
+				return -3;
 			if (memcmp(node, n, 20) != 0)
 				/*
 				 * Found a unique prefix, but it wasn't for the