fix in testgui.pl

diff --git a/tools/testgui.pl b/tools/testgui.pl
index 025b58548d9a031f9027c7c5ecc379267d84090c..8bdf96f644a6c9b58b4899105847eb49d8a6768e 100755 (executable)
--- a/tools/testgui.pl
+++ b/tools/testgui.pl
@@ -72,7 +72,7 @@ unless($q->param()) {
     
     my $sensorId = $q->param('sensorId');
     
-    if ($q->param('busy') ne "false" ) {
+    if ($q->param('busy') and ($q->param('busy') ne "false") ) {
       print img{src=>"../share/hourglass.png",title=>$sensorId};
     } else {
       my $imgSrc = $picPath.'/image_recalibrated_'.$sensorId.'.png';