Fix small typo

Remove additional ;

Signed-off-by: Karsten Keil <kkeil@suse.de>
diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c
index b70c66b..58c43e4 100644
--- a/drivers/isdn/mISDN/dsp_cmx.c
+++ b/drivers/isdn/mISDN/dsp_cmx.c
@@ -1579,7 +1579,7 @@
 	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 */