fix bug 58408 Trailing whitespace not stripped from filename being printed to

fix by bzbarsky@mit.edu r=mao,timeless sr=alecf

xpfe/global/resources/content/unix/printdialog.js

@@ -99,6 +99,14 @@ function checkValid(elementID)
   }
 }
 
+//---------------------------------------------------
+function stripTrailingWhitespace(element)
+{
+  var stringIn = element.value;
+  stringIn = stringIn.replace(/\s+$/,"");
+  element.value = stringIn;
+}
+
 //---------------------------------------------------
 function doPrintToFile( value )
 {

xpfe/global/resources/content/unix/printdialog.xul

@@ -60,7 +60,7 @@ Contributor(s): Masaki Katakai <katakai@japan.sun.com>
       <row valign="baseline">
         <text id="fileLabel" class="label" value="&fileInput.label;"/>
         <box>
-          <textfield id="fileInput" flex ="1"/>
+          <textfield id="fileInput" flex ="1" onblur="stripTrailingWhitespace(this)"/>
           <button id="chooseFile" value = "&chooseButton.label;" oncommand = "onChooseFile()"/>
         </box>
       </row>