Update the way to set the rate, according to last iri_base_algorithm version

src/iri_color_calibration_alg_node.cpp

@@ -6,7 +6,7 @@ ColorCalibrationAlgNode::ColorCalibrationAlgNode(MainGui *gui) :
   algorithm_base::IriBaseAlgorithm<ColorCalibrationAlgorithm>()
 {
   //init class attributes if necessary
-  this->loop_rate_ = 10;//in [Hz]
+  this->setRate(10);//in [Hz]
 
   /* initialize the pointer to the main window */
   this->gui=gui;