From c66462282ec14aea96b961012098f83e5a0f873d Mon Sep 17 00:00:00 2001
From: Neven Miculinic <neven.miculinic@gmail.com>
Date: Tue, 6 Nov 2018 12:05:02 +0100
Subject: [PATCH] Added opts to DecoderConfigOption

---
 viper.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/viper.go b/viper.go
index a32ab73..33d322e 100644
--- a/viper.go
+++ b/viper.go
@@ -851,8 +851,8 @@ func decode(input interface{}, config *mapstructure.DecoderConfig) error {
 
 // UnmarshalExact unmarshals the config into a Struct, erroring if a field is nonexistent
 // in the destination struct.
-func (v *Viper) UnmarshalExact(rawVal interface{}) error {
-	config := defaultDecoderConfig(rawVal)
+func (v *Viper) UnmarshalExact(rawVal interface{}, opts ...DecoderConfigOption) error {
+	config := defaultDecoderConfig(rawVal, opts...)
 	config.ErrorUnused = true
 
 	err := decode(v.AllSettings(), config)