gsm/gsm0411_smc: Fix typo

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/src/gsm/gsm0411_smc.c b/src/gsm/gsm0411_smc.c
index 2146c9e..54e6129 100644
--- a/src/gsm/gsm0411_smc.c
+++ b/src/gsm/gsm0411_smc.c
@@ -61,7 +61,7 @@
 
 static void cp_timer_expired(void *data);
 
-#define MAX_SMS_RETRY 2;
+#define MAX_SMS_RETRY 2
 
 /* init a new instance */
 void gsm411_smc_init(struct gsm411_smc_inst *inst, int network,