Bug 282253 JS Console doesn't clear properly r+sr=bz a=brendan

xpfe/components/console/resources/content/consoleBindings.xml

@@ -130,7 +130,7 @@
               return;
  
             this.appendError(aConsoleMessage);
-          } else {
+          } else if (aConsoleMessage.message) {
             this.appendMessage(aConsoleMessage.message);
           }
         ]]></body>