From 6c52907f2bd4361e795b42cda43c065e24c6f700 Mon Sep 17 00:00:00 2001
From: Danny Tylman <dtylman@gmail.com>
Date: Thu, 8 Sep 2016 11:40:53 +0300
Subject: [PATCH] fixes #416: panic in collector_heap

---
 search/collectors/heap.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/search/collectors/heap.go b/search/collectors/heap.go
index 1c834e9c..3f62867c 100644
--- a/search/collectors/heap.go
+++ b/search/collectors/heap.go
@@ -40,6 +40,9 @@ func (c *collectStoreHeap) RemoveLast() *search.DocumentMatch {
 func (c *collectStoreHeap) Final(skip int, fixup collectorFixup) (search.DocumentMatchCollection, error) {
 	count := c.Len()
 	size := count - skip
+	if size <= 0 {
+		return make(search.DocumentMatchCollection, 0), nil
+	}
 	rv := make(search.DocumentMatchCollection, size)
 	for count > 0 {
 		count--