Set wxHtmlHelpFrame title format before creating it.

This ensures that it's always set before it can be used, fixing assert
introduced in r75748.

Closes #15977.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75906 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/helpctrl.cpp

@@ -176,12 +176,12 @@ wxHtmlHelpFrame* wxHtmlHelpController::CreateHelpFrame(wxHtmlHelpData *data)
 {
     wxHtmlHelpFrame* frame = new wxHtmlHelpFrame(data);
     frame->SetController(this);
+    frame->SetTitleFormat(m_titleFormat);
     frame->Create(m_parentWindow, -1, wxEmptyString, m_FrameStyle
 #if wxUSE_CONFIG
         , m_Config, m_ConfigRoot
 #endif // wxUSE_CONFIG
         );
-    frame->SetTitleFormat(m_titleFormat);
     frame->SetShouldPreventAppExit(m_shouldPreventAppExit);
     m_helpFrame = frame;
     return frame;