File cups-pdf-build.patch of Package cups-pdf

--- src/cups-pdf.c.build	2013-03-19 14:08:17.573134743 +0100
+++ src/cups-pdf.c	2013-03-19 14:13:00.517147964 +0100
@@ -160,10 +160,6 @@
 
   (void) umask(0077);
 
-  group=getgrnam(conf.grp);
-  if (group)
-    (void) setgid(group->gr_gid);
-
   if (strlen(conf.log)) {
     if (stat(conf.log, &fstatus) || !S_ISDIR(fstatus.st_mode)) {
       if (create_dir(conf.log, 1)) 
@@ -176,12 +172,18 @@
     logfp=fopen(logfile, "a");
   }
 
-  if (!group) {
+  group=getgrnam(conf.grp);
+  if (group) {
+    if (setgid(group->gr_gid)) {
+      log_event(CPERROR, "Can't switch to new gid", conf.grp);
+      return 1;
+    } else {
+      log_event(CPDEBUG, "switching to new gid", conf.grp);
+    }
+  } else {
     log_event(CPERROR, "Grp not found", conf.grp);
     return 1;
   }
-  else 
-    log_event(CPDEBUG, "switching to new gid", conf.grp);
 
   (void) umask(0022);