From feedacc7b5e252bde995f979113ae5a960eebd1b Mon Sep 17 00:00:00 2001
From: Radu Ioan Fericean <radu@fericean.ro>
Date: Wed, 25 Nov 2015 13:28:42 +0200
Subject: [PATCH] protection against nil unit counter

---
 engine/account.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/engine/account.go b/engine/account.go
index 46602adcb..555545efc 100644
--- a/engine/account.go
+++ b/engine/account.go
@@ -753,6 +753,9 @@ func (acc *Account) AsOldStructure() interface{} {
 		Disabled:       acc.Disabled,
 	}
 	for i, uc := range acc.UnitCounters {
+		if uc == nil {
+			continue
+		}
 		result.UnitCounters[i] = &UnitsCounter{
 			BalanceType: uc.BalanceType,
 			Balances:    make(BalanceChain, len(uc.Balances)),