From cd91a3a03e4c2540d8ac28ba666887957f86a156 Mon Sep 17 00:00:00 2001
From: Jeffrey Altman <jaltman@secure-endpoints.com>
Date: Fri, 21 Jan 2022 08:51:28 -0500
Subject: [PATCH] appl/afsutil: expand_cell_name return NULL if not found
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  In function ‘afslog_cell.isra’:
  afslog.c:144:13: warning: ‘%s’ directive argument is null [-Wformat-overflow=]
  144 |            warnx("No cell matching \"%s\" found.", cell);
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

caused by expand_cell_name() returning the input pointer.
Alter the behavior of expand_cell_name() to match its usage.

Change-Id: I3b15c4b3e59b597af5351e5e62f5d7751be50feb
---
 appl/afsutil/afslog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appl/afsutil/afslog.c b/appl/afsutil/afslog.c
index f2ade9425..05078ee8e 100644
--- a/appl/afsutil/afslog.c
+++ b/appl/afsutil/afslog.c
@@ -118,7 +118,7 @@ expand_cell_name(const char *cell)
 	if(c)
 	    return c;
     }
-    return cell;
+    return NULL;
 }
 
 static void