chfn: don't append extra tailing commas

 # grep kzak /etc/passwd
 kzak:x:1000:1000::/home/kzak:/bin/bash

 # chfn kzak
 ...
 grep kzak /etc/passwd

old version:
 kzak:x:1000:1000:Karel Zak,,,,:/home/kzak:/bin/bash

fixed version:
 kzak:x:1000:1000:Karel Zak:/home/kzak:/bin/bash

Reported-by: Filip Dvorak <fdvorak@redhat.com>
References: f723cbf544a7eac2927634f2cb6d802437a2d519
Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/login-utils/chfn.c b/login-utils/chfn.c
index a2e6e099e..b7395552b 100644
--- a/login-utils/chfn.c
+++ b/login-utils/chfn.c
@@ -376,7 +376,7 @@ static int save_new_data(struct chfn_control *ctl)
 			ctl->newf.other);
 
 	/* remove trailing empty fields (but not subfields of ctl->newf.other) */
-	if (!ctl->newf.other) {
+	if (!ctl->newf.other || !*ctl->newf.other) {
 		while (len > 0 && gecos[len - 1] == ',')
 			len--;
 		gecos[len] = 0;