Correct the sizes of the (combined) texture unit arrays for VTF.

Issue=95
TRAC #16568
Signed-off-by: Daniel Koch
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@640 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/Program.cpp b/src/libGLESv2/Program.cpp
index d1fb29f..24c798c 100644
--- a/src/libGLESv2/Program.cpp
+++ b/src/libGLESv2/Program.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Copyright (c) 2002-2011 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
@@ -218,7 +218,7 @@
       default: UNREACHABLE();
     }
 
-    if (logicalTextureUnit >= 0 && logicalTextureUnit < MAX_TEXTURE_IMAGE_UNITS)
+    if (logicalTextureUnit >= 0 && logicalTextureUnit < getContext()->getMaximumCombinedTextureImageUnits())
     {
         return logicalTextureUnit;
     }