ac descriptor works

FossilOrigin-Name: 8e68ed51a2c8ee448474ab13ef8d0edbd8cfda5b5384684e2ed9ffa1fca4e799

src/cw/mavl_get_node_cmp..c

@@ -0,0 +1,18 @@
+
+#include "mavl.h"
+
+struct mavlnode * mavl_get_node_cmp(struct mavl *t ,void *data,
+	int ( *cmp ) ( const void *, const void * ))
+{
+	struct mavlnode *n = t->root;
+	while(n){
+		int rc=cmp(data,mavlnode_dataptr(n));
+		if (rc==0)
+			return n;
+		if (rc<0)
+			n=n->left;
+		else
+			n=n->right;
+	}
+	return NULL;
+}