Fixed Perl warning.

diff --git a/kernel/Linux/prepmod.in b/kernel/Linux/prepmod.in
index 4555dcd..dbe79ec 100755 (executable)
--- a/kernel/Linux/prepmod.in
+++ b/kernel/Linux/prepmod.in
@@ -44,7 +44,7 @@ sub modext { my($uname_r)=@_; ($uname_r lt "2.5" ? "o" : "ko"); }
 
 # mount(8) will util-linux/lib/env.c/sanitize_env()
 # including the clearance our $PATH:
-$ENV{"PATH"}=join(":",qw(/usr/local/bin /usr/bin /bin),$ENV{"PATH"});
+$ENV{"PATH"}=join(":",qw(/usr/local/bin /usr/bin /bin),($ENV{"PATH"} || ()));
 
 my $lufsd_bin;
 if ($0 eq "lufsd" || $0=~m#/lufsd$#) {