Patch 2.4.21 use propper type for pid -III

[Walter Harms]

- 
Hi liste,
this is a small patch to fix functions that do not use the 
correct type for pid. daniele bellucci and i have worked this 
out. 

walter

--- include/linux/fs.h.org	2003-06-28 21:50:30.000000000 +0200
+++ include/linux/fs.h	2003-06-28 21:48:53.000000000 +0200
@@ -516,7 +516,7 @@
 };
 
 struct fown_struct {
-	int pid;		/* pid or -pgrp where SIGIO should be sent */
+	pid_t pid;		/* pid or -pgrp where SIGIO should be sent */
 	uid_t uid, euid;	/* uid/euid of process setting the owner */
 	int signum;		/* posix.1b rt signal to be delivered on IO */
 };