From 0612adec41f26ff618da76f57f7049d0cb2a38f8 Mon Sep 17 00:00:00 2001
From: Tomasz Sobczyk <tomasz.sobczyk1997@gmail.com>
Date: Fri, 4 Sep 2020 20:53:40 +0200
Subject: [PATCH] Fix incorrect early exit in evaluate_leaf.

---
 src/learn/gensfen.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/learn/gensfen.cpp b/src/learn/gensfen.cpp
index 89fa49e0..23d7e2c6 100644
--- a/src/learn/gensfen.cpp
+++ b/src/learn/gensfen.cpp
@@ -702,12 +702,13 @@ namespace Learner
 
         // Reach leaf
         Value v;
-        if (pos.checkers()) {
+        if (pos.checkers())
+        {
             // Sometime a king is checked.  An example is a case that a checkmate is
             // found in the search.  If Eval::evaluate() is called whne a king is
             // checked, classic eval crashes by an assertion. To avoid crashes, return
             // VALUE_NONE and let the caller assign a value to the position.
-            return VALUE_NONE;
+            v = VALUE_NONE;
         }
         else
         {