Added assertion to RefCountObject destructor that mRefCount is zero.

Review URL: http://codereview.appspot.com/2180041

git-svn-id: http://angleproject.googlecode.com/svn/trunk@424 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/RefCountObject.cpp b/src/libGLESv2/RefCountObject.cpp
index e3fd36e..2de1e71 100644
--- a/src/libGLESv2/RefCountObject.cpp
+++ b/src/libGLESv2/RefCountObject.cpp
@@ -22,6 +22,7 @@
 
 RefCountObject::~RefCountObject()
 {
+    ASSERT(mRefCount == 0);
 }
 
 void RefCountObject::addRef() const