db: Fix missing commas in AuthTuples table creation

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/openbsc/src/db.c b/openbsc/src/db.c
index 73e9c25..57ea9ba 100644
--- a/openbsc/src/db.c
+++ b/openbsc/src/db.c
@@ -133,9 +133,9 @@
 	"CREATE TABLE IF NOT EXISTS AuthTuples ("
 		"id INTEGER PRIMARY KEY AUTOINCREMENT, "
 		"subscriber_id NUMERIC UNIQUE NOT NULL, "
-		"rand BLOB"
-		"sres BLOB"
-		"kc BLOB"
+		"rand BLOB, "
+		"sres BLOB, "
+		"kc BLOB "
 		")",
 };