Fix regression of commit 0a7bf77b8c0765f8a53dc72a8edab8e0496938ff - GLReadBufferUtil's GLPixelBuffer* usage. Ref GLJPanel SingleAWTGLPixelBufferProvider's screenshots.

Ref GLJPanel SingleAWTGLPixelBufferProvider's screenshots:
  <http://jogamp.org/files/screenshots/gljpanels-singlebuffer/>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java b/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java
index 602dbb095..ae1b459a6 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/GLReadBufferUtil.java
@@ -189,7 +189,7 @@ public class GLReadBufferUtil {
         boolean newData = false;
         if( null == readPixelBuffer || readPixelBuffer.requiresNewBuffer(gl, width, height, readPixelSize) ) {
             readPixelBuffer = pixelBufferProvider.allocate(gl, pixelAttribs, width, height, 1, true, readPixelSize);
-            Buffers.rangeCheckBytes(readPixelBuffer, readPixelSize);
+            Buffers.rangeCheckBytes(readPixelBuffer.buffer, readPixelSize);
             try {
                 readTextureData = new TextureData(
                            gl.getGLProfile(),