udev.if: Call files_search_pid instead of files_search_var_lib in udev_manage_pid_files

udev_manage_pid_files is supposed to manage files that are located in
/var/run, allow to search files in this directory instead of /var/lib

policy/modules/system/udev.if

@@ -296,7 +296,7 @@ interface(`udev_manage_pid_files',`
 		type udev_var_run_t;
 	')
 
-	files_search_var_lib($1)
+	files_search_pids($1)
 	manage_files_pattern($1, udev_var_run_t, udev_var_run_t)
 ')