schema compile BUGFIXES test refine in uses and fix found issues
diff --git a/src/tree_schema_free.c b/src/tree_schema_free.c
index 7dbe83c..1b74314 100644
--- a/src/tree_schema_free.c
+++ b/src/tree_schema_free.c
@@ -575,6 +575,7 @@
         break;
     }
     FREE_ARRAY(ctx, type->exts, lysc_ext_instance_free);
+    FREE_STRING(ctx, type->dflt);
 
     free(type);
 }