db_text(k): init DB API lib in mod_register()

(cherry picked from commit fa9e7de6bbef15110cb4940769b27d90b2c000c8)

modules_k/db_text/dbtext.c

@@ -83,6 +83,12 @@ struct module_exports exports = {
 	0         /* per-child init function */
 };
 
+int mod_register(char *path, int *dlflags, void *p1, void *p2)
+{
+	if(db_api_init()<0)
+		return -1;
+	return 0;
+}
 
 static int mod_init(void)
 {