patch 9.0.2019: Vim9: no support for funcrefs

Problem:  Vim9: no support for funcrefs
Solution: Add support for object/class funcref members

closes: #11981 #12417 #12960 #12324 #13333

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
diff --git a/src/vim9instr.c b/src/vim9instr.c
index 6de29b6..f7b074c 100644
--- a/src/vim9instr.c
+++ b/src/vim9instr.c
@@ -1384,6 +1384,7 @@
 	cctx_T	    *cctx,
 	ufunc_T	    *ufunc,
 	class_T	    *cl,
+	int	    object_method,
 	int	    fi,
 	int	    *isn_idx)
 {
@@ -1412,6 +1413,7 @@
 	{
 	    extra->fre_class = cl;
 	    ++cl->class_refcount;
+	    extra->fre_object_method = object_method;
 	    extra->fre_method_idx = fi;
 	}
     }