Freetype: avoid dangling pointer

Author: Dutchman101

vendor/freetype/src/truetype/ttgload.c

@@ -1925,6 +1925,9 @@
 
 #ifdef FT_CONFIG_OPTION_INCREMENTAL
 
+    /* restore the original stream */
+    loader->stream = face->root.stream;
+
     if ( glyph_data_loaded )
       face->root.internal->incremental_interface->funcs->free_glyph_data(
         face->root.internal->incremental_interface->object,