staging:rtl8192u: Add spaces around + operator - Style

Add spaces around '+' operator to clear the checkpatch issue.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/ieee80211/ieee80211_module.c

@@ -109,7 +109,7 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 	}
 
 	ieee = netdev_priv(dev);
-	memset(ieee, 0, sizeof(struct ieee80211_device)+sizeof_priv);
+	memset(ieee, 0, sizeof(struct ieee80211_device) + sizeof_priv);
 	ieee->dev = dev;
 
 	err = ieee80211_networks_allocate(ieee);