Fixed button handling

src/pulsatingscience.cpp

@@ -191,24 +191,19 @@ void PulsatingScience::closeEvent(QCloseEvent *event)
 
 void PulsatingScience::on_pushRun_clicked()
 {
-	if(ui.pushRun->isEnabled()) {
     ui.pushRun->setEnabled(false);
     ui.pushPause->setEnabled(true);
     ui.pushStop->setEnabled(true);
 }
-	else {
-		ui.pushRun->setEnabled(true);
-		ui.pushPause->setEnabled(false);
-		ui.pushStop->setEnabled(false);
-	}
-}
 
 void PulsatingScience::on_pushPause_clicked()
 {
+    if(ui.pushPause->isEnabled()) {
         ui.pushRun->setEnabled(true);
         ui.pushPause->setEnabled(false);
         ui.pushStop->setEnabled(true);
     }
+}
 
 void PulsatingScience::on_pushStop_clicked()
 {