sonic: fix typo

Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

hw/dp8393x.c

@@ -515,7 +515,7 @@ static void write_register(dp8393xState *s, int reg, uint16_t val)
     switch (reg) {
         /* Command register */
         case SONIC_CR:
-            do_command(s, val);;
+            do_command(s, val);
             break;
         /* Prevent write to read-only registers */
         case SONIC_CAP2: