message: Fix unmapping element array buffer at CopyClientMemoryArrays
diff: @@ -810,7 +810,7 @@ WrappedOpenGL::ClientMemoryData *WrappedOpenGL::CopyClientMemoryArrays(GLint fir
  count = (GLint)(max - min + 1);
  if(idxbuf != 0)
  - m_Real.glUnmapBuffer(eGL_ELEMENT_ARRAY_BUFFER_BINDING);
  + m_Real.glUnmapBuffer(eGL_ELEMENT_ARRAY_BUFFER);
  }
  // App initially used client memory, so copy it into the temporary buffer.
  