Avoid using wxHtmlTag::HasParam() unnecessarily.

Use GetParamAsXXX() accessors instead as they combine the calls to HasParam()
and GetParam() and make the code shorter and avoid the duplication of the tag
name.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74881 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/htmlpars.cpp

@@ -918,11 +918,13 @@ bool wxMetaTagHandler::HandleTag(const wxHtmlTag& tag)
         return false;
     }
 
-    if (tag.HasParam(wxT("HTTP-EQUIV")) &&
-        tag.GetParam(wxT("HTTP-EQUIV")).IsSameAs(wxT("Content-Type"), false) &&
-        tag.HasParam(wxT("CONTENT")))
+    wxString httpEquiv,
+             content;
+    if (tag.GetParamAsString(wxT("HTTP-EQUIV"), &httpEquiv) &&
+        httpEquiv.IsSameAs(wxT("Content-Type"), false) &&
+        tag.GetParamAsString(wxT("CONTENT"), &content))
     {
-        wxString content = tag.GetParam(wxT("CONTENT")).Lower();
+        content.MakeLower();
         if (content.Left(19) == wxT("text/html; charset="))
         {
             *m_retval = content.Mid(19);