If find_pid_by_name() had an error, it was returning -1, but storing

that into a pid_t, which is unsigned on a number archs.  Furthermore,
find_pid_by_name() would _never_ return an error if the intended proces
was "init", but instead would return 1, meaning we would fail to work
on 2.4.x kernels running an initrd...
 -Erik

procps/pidof.c

@@ -58,7 +58,7 @@ extern int pidof_main(int argc, char **argv)
 
 	/* Looks like everything is set to go. */
 	while(optind < argc) {
-		pid_t* pidList;
+		long* pidList;
 
 		pidList = find_pid_by_name( argv[optind]);
 		if (!pidList || *pidList<=0) {