update-kernel: Correct exit code on invalid option error

Signed-off-by: Vitaly Chikunov <vt@altlinux.org>

update-kernel

@@ -67,7 +67,7 @@ Valid options are:
 	-h, --help        show this text and exit
 Run remove-old-kernels to uninstall unused kernels.
 EOF
-exit 0
+exit "$@"
 }
 
 # compensate for absent rpmevrdtcmp tool
@@ -109,7 +109,7 @@ release=
 verbose=
 
 #parse command line options
-TEMP=$(getopt -n "$PROG" -o A:,D:,a,i,l,f,y,t:,r:,v,n,H,h -l interactive,list,all,add:,force,type:,release:,verbose,reinstall,dry-run,download-only,headers,help -- "$@") || show_help
+TEMP=$(getopt -n "$PROG" -o A:,D:,a,i,l,f,y,t:,r:,v,n,H,h -l interactive,list,all,add:,force,type:,release:,verbose,reinstall,dry-run,download-only,headers,help -- "$@") || show_help 1
 eval set -- "$TEMP"
 
 while :; do