Fix small typo

Remove additional ;
Signed-off-by: Karsten Keil <kkeil@suse.de>

drivers/isdn/mISDN/dsp_cmx.c

@@ -1579,7 +1579,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
 	schedule_work(&dsp->workq);
 }
 
-static u32	jittercount; /* counter for jitter check */;
+static u32	jittercount; /* counter for jitter check */
 struct timer_list dsp_spl_tl;
 u32	dsp_spl_jiffies; /* calculate the next time to fire */
 static u16	dsp_count; /* last sample count */