From bead0d26642bbc0c5e570306c226676c66d18b86 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sun, 2 Jun 2013 22:14:32 +0300
Subject: Add missing check in itemcontainer.

---
 src/gui/widgets/itemcontainer.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/gui/widgets/itemcontainer.cpp')

diff --git a/src/gui/widgets/itemcontainer.cpp b/src/gui/widgets/itemcontainer.cpp
index 8e05097b5..146a2f328 100644
--- a/src/gui/widgets/itemcontainer.cpp
+++ b/src/gui/widgets/itemcontainer.cpp
@@ -608,8 +608,11 @@ int ItemContainer::getSlotIndex(const int x, const int y) const
     if (x < getWidth() && y < getHeight())
     {
         const int idx = (y / mBoxHeight) * mGridColumns + (x / mBoxWidth);
-        if (idx < mGridRows * mGridColumns && mShowMatrix[idx] >= 0)
+        if (idx >= 0 && idx < mGridRows * mGridColumns
+            && mShowMatrix[idx] >= 0)
+        {
             return mShowMatrix[idx];
+        }
     }
 
     return Inventory::NO_SLOT_INDEX;
-- 
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