Fixed segmentation fault when $PATH is not set.

ChangeLog

@@ -1,3 +1,7 @@
+2003-03-17  Henning Meier-Geinitz <henning@meier-geinitz.de>
+
+	* backend/as6e.c: Fixed segmentation fault when $PATH is not set.
+
 2003-03-16  Henning Meier-Geinitz <henning@meier-geinitz.de>
 
 	* sanei/sanei_scsi.c: OS/2 specific changes: memory for SRB now is

backend/as6e.c

@@ -793,6 +793,8 @@ check_for_driver (const char *devname)
   int count = 0, offset = 0;
 
   path = getenv ("PATH");
+  if (!path)
+    return 0;
   while (path[count] != '\0')
     {
       memset (fullname, '\0', sizeof (fullname));