Staging: rtl8192u: Remove trailing whitespace.

This patch removes whitespace at the end of the line.
Issue found by checkpatch.pl.
Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/ieee80211/ieee80211_module.c

@@ -284,7 +284,7 @@ int __init ieee80211_debug_init(void)
 				" proc directory\n");
 		return -EIO;
 	}
-	e = proc_create("debug_level", S_IRUGO | S_IWUSR, 
+	e = proc_create("debug_level", S_IRUGO | S_IWUSR,
 			      ieee80211_proc, &fops);
 	if (!e) {
 		remove_proc_entry(DRV_NAME, init_net.proc_net);