From 86d5de2965a3cfe168a9c8955e3ee0d1ed34b634 Mon Sep 17 00:00:00 2001
From: Markus Staab <maggus.staab@googlemail.com>
Date: Tue, 10 Jul 2018 21:01:52 +0200
Subject: [PATCH] Define variable only when actually used

---
 src/Composer/DependencyResolver/Solver.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/Composer/DependencyResolver/Solver.php b/src/Composer/DependencyResolver/Solver.php
index 862411c61..6f1999e36 100644
--- a/src/Composer/DependencyResolver/Solver.php
+++ b/src/Composer/DependencyResolver/Solver.php
@@ -510,9 +510,8 @@ class Solver
      */
     private function analyzeUnsolvableRule(Problem $problem, Rule $conflictRule)
     {
-        $why = spl_object_hash($conflictRule);
-
         if ($conflictRule->getType() == RuleSet::TYPE_LEARNED) {
+            $why = spl_object_hash($conflictRule);
             $learnedWhy = $this->learnedWhy[$why];
             $problemRules = $this->learnedPool[$learnedWhy];