staging: rtl8188eu: hal: Drop Useless Initialization

Removed initialisation of a varible if it is immediately reassigned.
Changes were made using Coccinelle.
@bad@
identifier i;
position p;
@@

i =@p <+...i...+>;

@@
type T;
constant C;
expression e;
identifier i;
position p != bad.p;
@@
T i
- = C
;
i =@p e;
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/rtl8188eu_xmit.c

@@ -415,7 +415,7 @@ static u32 xmitframe_need_length(struct xmit_frame *pxmitframe)
 {
 	struct pkt_attrib *pattrib = &pxmitframe->attrib;
 
-	u32 len = 0;
+	u32 len;
 
 	/*  no consider fragement */
 	len = pattrib->hdrlen + pattrib->iv_len +
@@ -614,7 +614,7 @@ s32 rtl8188eu_xmitframe_complete(struct adapter *adapt, struct xmit_priv *pxmitp
 
 static s32 xmitframe_direct(struct adapter *adapt, struct xmit_frame *pxmitframe)
 {
-	s32 res = _SUCCESS;
+	s32 res;
 
 	res = rtw_xmitframe_coalesce(adapt, pxmitframe->pkt, pxmitframe);
 	if (res == _SUCCESS)