From 591dea579ae946972fef14bbf799b2d3a12e82d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C4=81ris=20Narti=C5=A1s?= <mn@sungis.lv>
Date: Mon, 18 Sep 2017 23:37:40 +0300
Subject: [PATCH] Fix crash on undefined metadata on some Nikon images.
 Identical to commit:5405d61623e82896e498c5c8342dd6f42e689115

---
 src/nikonmn.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/nikonmn.cpp b/src/nikonmn.cpp
index 92047755..8c42e317 100644
--- src/nikonmn.cpp
+++ src/nikonmn.cpp
@@ -299,6 +299,8 @@ namespace Exiv2 {
                                                const Value& value,
                                                const ExifData* exifData)
     {
+        if ( ! exifData ) return os << "undefined" ;
+
         if ( value.count() >= 9 ) {
             ByteOrder bo = getKeyString("Exif.MakerNote.ByteOrder",exifData) == "MM" ? bigEndian : littleEndian;
             byte      p[4];