changes for actubent - not compiling!

FossilOrigin-Name: adf99bdc2ee784a4acf4066b90c33fb1e6124e8c49c255d3fd5011bb33852d52

src/cw/mavl_replace.c

@@ -1,10 +1,11 @@
 #include "mavl.h"
 
-void *mavl_replace(struct mavl *t,void *data){
+union mavldata *mavl_replace(struct mavl *t,union mavldata *data){
 	struct mavlnode * node = mavl_get_node(t,data);
 	if (node){
-		t->del(node->data);
-		return node->data=data;	
+		t->del(&node->data);
+		node->data=*data;
+		return &node->data;	
 	}
 	return mavl_add(t,data);
 }