From d164d513808ecaf8921a8841a663f5c50bce5b52 Mon Sep 17 00:00:00 2001
From: Dmitry-Me <wipedout@yandex.ru>
Date: Thu, 5 Mar 2015 10:31:51 +0300
Subject: [PATCH] Fix potential null pointer dereference

---
 modules/core/src/matrix.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/core/src/matrix.cpp b/modules/core/src/matrix.cpp
index e1e9caa837..c1d2c34852 100644
--- a/modules/core/src/matrix.cpp
+++ b/modules/core/src/matrix.cpp
@@ -205,9 +205,12 @@ public:
 
     void deallocate(UMatData* u) const
     {
+        if(!u)
+            return;
+
         CV_Assert(u->urefcount >= 0);
         CV_Assert(u->refcount >= 0);
-        if(u && u->refcount == 0)
+        if(u->refcount == 0)
         {
             if( !(u->flags & UMatData::USER_ALLOCATED) )
             {