Fixed: OpenGL ES driver compilation

--HG--
branch : develop

code/nel/src/3d/driver/opengl/driver_opengl.cpp

@@ -1203,6 +1203,7 @@ sint CDriverGL::getTotalVideoMemory() const
 {
 	H_AUTO_OGL(CDriverGL_getTotalVideoMemory);
 
+#ifndef USE_OPENGLES
 	if (_Extensions.NVXGPUMemoryInfo)
 	{
 		GLint memoryInKiB = 0;
@@ -1306,6 +1307,10 @@ sint CDriverGL::getTotalVideoMemory() const
 	}
 #endif
 
+#else
+	// TODO: implement for OpenGL ES
+#endif
+
 	return -1;
 }