From 735b6ce97b656deae5e30bd63690af104ef17c4f Mon Sep 17 00:00:00 2001
From: Walzer <walzer@cocos2d-x.org>
Date: Tue, 19 Apr 2011 11:23:02 +0800
Subject: [PATCH] CCMutableArray::count() may crash if m_array is empty. Detect
 empty() before iteration

---
 cocos2dx/include/CCMutableArray.h | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/cocos2dx/include/CCMutableArray.h b/cocos2dx/include/CCMutableArray.h
index 7f6691532a..ccc0fffbca 100644
--- a/cocos2dx/include/CCMutableArray.h
+++ b/cocos2dx/include/CCMutableArray.h
@@ -55,15 +55,19 @@ public:
 	unsigned int count(void)
 	{
 		unsigned int uCount = 0;
-		CCMutableArrayIterator it;
-		for (it = m_array.begin(); it != m_array.end(); ++it)
+		
+		if (!m_array.empty())
 		{
-			if (*it == NULL)
+			CCMutableArrayIterator it;
+			for (it = m_array.begin(); it != m_array.end(); ++it)
 			{
-				break;
-			}
+				if (*it == NULL)
+				{
+					break;
+				}
 
-			++uCount;
+				++uCount;
+			}
 		}
 
 		return uCount;