staging: rtl8188eu: remove unncessary asignment to cleanup long line

Instead of first asign 'wrqu.data.length = p - buff' use 'p - buff'
directly in min_t() in the subsequent asignment. Clears a line over
80 characters checkpatch warning.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/os_dep/mlme_linux.c

@@ -109,8 +109,7 @@ void rtw_report_sec_ie(struct adapter *adapter, u8 authmode, u8 *sec_ie)
 			p += sprintf(p, "%02x", sec_ie[i]);
 		p += sprintf(p, ")");
 		memset(&wrqu, 0, sizeof(wrqu));
-		wrqu.data.length = p - buff;
-		wrqu.data.length = min_t(__u16, wrqu.data.length, IW_CUSTOM_MAX);
+		wrqu.data.length = min_t(__u16, p - buff, IW_CUSTOM_MAX);
 		wireless_send_event(adapter->pnetdev, IWEVCUSTOM, &wrqu, buff);
 		kfree(buff);
 	}