Description:
------------
When using XSLT there is a PHP Warning triggered on every <xsl:with-param/> Element.

The Result is as expected (it is an annoying message).

(The Warning occurs also when using <xsl:with-param name="xy" select="'string'"/>)  


Reproduce code:
---------------
--Stylesheet--
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE xsl:stylesheet  [
]>
<xsl:stylesheet version="1.0" xml:space="preserve" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">    
	<xsl:output method="html" xml:space="preserve" indent="yes" encoding="UTF-8"/>

	<xsl:template name="TestTemplate">
		<xsl:param name="Param1"/>
		<xsl:text>Parameter1 Value: </xsl:text><xsl:copy-of select="$Param1"/>
	</xsl:template>
	
	<xsl:template match="/Test">
		<xsl:call-template name="TestTemplate">
			<xsl:with-param name="Param1">testOutput to print</xsl:with-param>
		</xsl:call-template>
	</xsl:template>
</xsl:stylesheet>
--/Stylesheet--

--PHP Code--
<?php
$data = <<<EOT
<Test></Test>
EOT;

$xml = new DOMDocument("1.0", "UTF-8");
$xml->loadXML($data);
$proc = new XSLTProcessor();
$xslp = new DOMDocument();
$xslp->load("test.xsl");
$proc->importStyleSheet($xslp);

echo $proc->transformToXml($xml);
--/PHP Code--

Expected result:
----------------
Parameter1 Value: 'testOutput to print' 

Actual result:
--------------
Warning: XSLTProcessor::transformToXml() [xsltprocessor.transformtoxml]: xsl:call-template: misplaced text element in /home/matthes/Projects/FuPShop/tmp/transform.php on line 23

Warning: XSLTProcessor::transformToXml() [xsltprocessor.transformtoxml]: xsl:call-template: misplaced text element in /home/matthes/Projects/FuPShop/tmp/transform.php on line 23
Parameter1 Value: 'testOutput to print'