issue_11972 Incorrect indentation for custom command following list

Creatin an extra, invisible, linebreak to solve the issue.
HTML output is, visually, the same (as well as PDF and RTF). XML slightly improved by creating the right / better paragraph structure

Author: albert-github

src/commentscan.l

@@ -4462,7 +4462,7 @@ static void addXRefItem(yyscan_t yyscanner,
     item->setAnchor(anchorLabel);
     yyextra->current->sli.push_back(item);
     QCString cmdString;
-    cmdString.sprintf(" \\xrefitem %s %d.",qPrint(listName),item->id());
+    cmdString.sprintf("\\ilinebr \\xrefitem %s %d.",qPrint(listName),item->id());
     if (yyextra->inBody)
     {
       yyextra->current->inbodyDocs += cmdString;

testing/009/class_bug.xml

@@ -12,8 +12,16 @@
         <briefdescription>
         </briefdescription>
         <detaileddescription>
-          <para>Description <xrefsect id="bug_1_bug000002"><xreftitle>Bug</xreftitle><xrefdescription><para>Function bug<itemizedlist><listitem><para>list item 1 in bug</para></listitem><listitem><para>list item 2 in bug</para></listitem></itemizedlist>
-</para></xrefdescription></xrefsect></para>
+          <para>Description</para>
+          <para>
+            <xrefsect id="bug_1_bug000002">
+              <xreftitle>Bug</xreftitle>
+              <xrefdescription>
+                <para>Function bug<itemizedlist><listitem><para>list item 1 in bug</para></listitem><listitem><para>list item 2 in bug</para></listitem></itemizedlist>
+</para>
+              </xrefdescription>
+            </xrefsect>
+          </para>
           <para>More text. </para>
         </detaileddescription>
         <inbodydescription>

testing/009/class_deprecated.xml

@@ -12,7 +12,15 @@
         <briefdescription>
         </briefdescription>
         <detaileddescription>
-          <para>Do deprecated things. <xrefsect id="deprecated_1_deprecated000002"><xreftitle>Deprecated</xreftitle><xrefdescription><para>No not use this function anymore. </para></xrefdescription></xrefsect></para>
+          <para>Do deprecated things.</para>
+          <para>
+            <xrefsect id="deprecated_1_deprecated000002">
+              <xreftitle>Deprecated</xreftitle>
+              <xrefdescription>
+                <para>No not use this function anymore. </para>
+              </xrefdescription>
+            </xrefsect>
+          </para>
         </detaileddescription>
         <inbodydescription>
         </inbodydescription>