src/db.h: use GSM23003_MSISDN_MAX_DIGITS for MSISDN buffer size

Change-Id: I253e6a04a77c29f62d3c696515d115f8a829283b
Depends on: Idc74f4d94ad44b9fc1b6d43178f5f33d551ebfb1
diff --git a/src/db.h b/src/db.h
index 12e74f8..6e4bf49 100644
--- a/src/db.h
+++ b/src/db.h
@@ -73,7 +73,7 @@
 
 	int64_t		id;
 	char		imsi[GSM23003_IMSI_MAX_DIGITS+1];
-	char		msisdn[GT_MAX_DIGITS+1];
+	char		msisdn[GSM23003_MSISDN_MAX_DIGITS+1];
 	/* imeisv? */
 	char		imei[GSM23003_IMEI_NUM_DIGITS+1];
 	char		vlr_number[32];