staging: r8188eu: add blank line between functions

Conform to Linux kernel coding style.
Noticed when completing a different patch.
Signed-off-by: Rebecca Mckeever <remckee0@gmail.com>
Link: https://lore.kernel.org/r/ccacca6f679a879ad2032dc0aeb0b0156e3a847b.1649011311.git.remckee0@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_cmd.c

@@ -1420,6 +1420,7 @@ void rtw_survey_cmd_callback(struct adapter *padapter,  struct cmd_obj *pcmd)
 	rtw_free_cmd_obj(pcmd);
 
 }
+
 void rtw_disassoc_cmd_callback(struct adapter *padapter, struct cmd_obj *pcmd)
 {
 	struct	mlme_priv *pmlmepriv = &padapter->mlmepriv;