fix: dont assign receiver on indexExpr

_test/method32.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	var a = []func(string){bar}
+	 b := a[0]
+	 b("bar")
+}
+
+func bar(a string) {
+	fmt.Println(a)
+}
+
+// Output:
+// bar

interp/cfg.go

@@ -721,7 +721,6 @@ func (interp *Interpreter) cfg(root *node, pkgID string) ([]*node, error) {
 				n.typ = t.val
 			}
 			n.findex = sc.add(n.typ)
-			n.recv = &receiver{node: n}
 			typ := t.TypeOf()
 			switch k := typ.Kind(); k {
 			case reflect.Map: