channels: fix possible NULL dereference

diff --git a/src/channels.c b/src/channels.c
index facbd9a1a3b7de8892fc1319210a23c87dc9b9c7..f049fd5dcaceb667b51c19e4f1fd2df249355e42 100644 (file)
--- a/src/channels.c
+++ b/src/channels.c
@@ -92,7 +92,8 @@ channel_class_autoname_set ( void *obj, const void *p )
       free(ch->ch_name);
       ch->ch_name = strdup(s);
     } else if (b) {
-      ch->ch_name[0] = '\0';
+      if (ch->ch_name)
+        ch->ch_name[0] = '\0';
     }
     ch->ch_autoname = b;
     return 1;