V0.3: Prevent division by 0 in the summary line

Makefile

 BASE=taxreport
 PLUGINTYPE=vmextended
-VERSION=0.2
+VERSION=0.3
 
 PLUGINFILES=$(BASE).php $(BASE).script.php $(BASE).xml index.html 
 # $(BASE)/

taxreport.xml

@@ -7,7 +7,7 @@
     <authorUrl>http://www.open-tools.net/</authorUrl>
     <copyright>Copyright (C) 2015 Reinhold Kainhofer. All rights reserved.</copyright>
     <license>http://www.gnu.org/licenses/gpl-3.0.html GNU/GPLv3</license>
-    <version>0.2</version>
+    <version>0.3</version>
     <releaseDate>2015-04-01</releaseDate>
     <releaseType>Initial Release</releaseType>
     <downloadUrl>http://www.open-tools.net</downloadUrl>

views/taxreport/tmpl/default.php

@@ -74,7 +74,7 @@ $myCurrencyDisplay = CurrencyDisplay::getInstance();
                 <tr>
                     <th align="center"></th>
                     <th align="left"><?php echo vmText::_('VMEXT_TAXREPORT_SUMMARY'); ?></th>
-                    <th align="center"><?php echo round($sum_tax/$sum_revenue*100, 4) . " %"; ?></th>
+                    <th align="center"><?php if ($sum_revenue > 0) echo round($sum_tax/$sum_revenue*100, 4) . " %"; ?></th>
                     <th align="center"><?php echo $nr_orders; ?></th>
                     <th align="right"><?php echo $myCurrencyDisplay->priceDisplay($sum_revenue); ?></th>
                     <th align="right"><?php echo $myCurrencyDisplay->priceDisplay($sum_tax); ?></th>