systemadm: fix signed comparison issue

[elogind.git] / unit.c

diff --git a/unit.c b/unit.c
index f1dc3ddf871db69be0805cc5afc3f79e487a90d6..a14e18ef5b18d05d9c11437b8154cd5c9d7fe006 100644 (file)
--- a/unit.c
+++ b/unit.c
@@ -1,5 +1,24 @@
 /*-*- Mode: C; c-basic-offset: 8 -*-*/
 
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
@@ -332,15 +351,15 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
         char *t;
         UnitDependency d;
         Iterator i;
-        char *prefix2;
+        char *p2;
+        const char *prefix2;
 
         assert(u);
 
         if (!prefix)
                 prefix = "";
-        prefix2 = strappend(prefix, "\t");
-        if (!prefix2)
-                prefix2 = "";
+        p2 = strappend(prefix, "\t");
+        prefix2 = p2 ? p2 : prefix;
 
         fprintf(f,
                 "%s→ Unit %s:\n"
@@ -378,7 +397,7 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
         if (u->meta.job)
                 job_dump(u->meta.job, f, prefix2);
 
-        free(prefix2);
+        free(p2);
 }
 
 /* Common implementation for multiple backends */