Only put an info in an admonition if there's something to go in it

diff --git a/docbook/relaxng/tools/db4-upgrade.xsl b/docbook/relaxng/tools/db4-upgrade.xsl
index 06f5e44b93bd55915ff2dd9dbf2226da1d447801..007e7338b2d84eccd30d0d3082e96b3e460b90a4 100644 (file)
--- a/docbook/relaxng/tools/db4-upgrade.xsl
+++ b/docbook/relaxng/tools/db4-upgrade.xsl
@@ -226,11 +226,15 @@
     <xsl:otherwise>
       <xsl:copy>
         <xsl:call-template name="copy.attributes"/>
-        <info>
-          <xsl:apply-templates select="title" mode="copy"/>
-          <xsl:apply-templates select="titleabbrev" mode="copy"/>
-          <xsl:apply-templates select="subtitle" mode="copy"/>
-        </info>
+
+       <xsl:if test="title|titleabbrev|subtitle">
+         <info>
+           <xsl:apply-templates select="title" mode="copy"/>
+           <xsl:apply-templates select="titleabbrev" mode="copy"/>
+           <xsl:apply-templates select="subtitle" mode="copy"/>
+         </info>
+       </xsl:if>
+
         <xsl:apply-templates/>
       </xsl:copy>
     </xsl:otherwise>