staging: rtl8192u: r8192U_core: fix unnecessary check before kfree code style issue

kfree(NULL) is safe and the checks were not required.
Signed-off-by: Raphaël Beamonte <raphael.beamonte@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r8192U_core.c

@@ -1724,10 +1724,9 @@ static void rtl8192_usb_deleteendpoints(struct net_device *dev)
 	}
 	kfree(priv->oldaddr);
 	priv->oldaddr = NULL;
-	if (priv->pp_rxskb) {
+
 	kfree(priv->pp_rxskb);
 	priv->pp_rxskb = NULL;
-	}
 }
 #else
 void rtl8192_usb_deleteendpoints(struct net_device *dev)
@@ -1752,12 +1751,10 @@ void rtl8192_usb_deleteendpoints(struct net_device *dev)
 	priv->rx_urb = NULL;
 	kfree(priv->oldaddr);
 	priv->oldaddr = NULL;
-	if (priv->pp_rxskb) {
+
 	kfree(priv->pp_rxskb);
 	priv->pp_rxskb = 0;
 
-	}
-
 #endif
 }
 #endif