staging: dgnc: dgnc_tty: Remove useless initialisation

Remove intialisation of a variable that is immediately reassigned.

The semantic patch used to find this is:

// <smpl>
@@
type T;
identifier x;
constant C;
expression e;
@@

T x
- = C
 ;
x = e;
// </smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_tty.c

@@ -838,7 +838,7 @@ static void dgnc_set_custom_speed(struct channel_t *ch, uint newrate)
 
 void dgnc_check_queue_flow_control(struct channel_t *ch)
 {
-	int qleft = 0;
+	int qleft;
 
 	/* Store how much space we have left in the queue */
 	qleft = ch->ch_r_tail - ch->ch_r_head - 1;