From d4f0a9a19bb48c0296bb0b56a7149b2296999e62 Mon Sep 17 00:00:00 2001
From: Morgan Hardwood <bugs@londonlight.org>
Date: Wed, 3 Apr 2019 10:14:49 +0200
Subject: [PATCH] Fix crash in histogram matching #5249

Patch by Alberto
https://github.com/Beep6581/RawTherapee/issues/5249#issuecomment-477923928
---
 rtengine/histmatching.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtengine/histmatching.cc b/rtengine/histmatching.cc
index f91086285..79c40fba3 100644
--- a/rtengine/histmatching.cc
+++ b/rtengine/histmatching.cc
@@ -109,7 +109,7 @@ void mappingToCurve(const std::vector<int> &mapping, std::vector<double> &curve)
         }
     }
     if (idx == int(mapping.size())) {
-        for (idx = 1; idx < int(mapping.size()); ++idx) {
+        for (idx = 1; idx < int(mapping.size())-1; ++idx) {
             if (mapping[idx] >= idx) {
                 break;
             }