Fix special characters handling in wxSVGFileDC::DrawText().

Special XML characters need to be quoted before being saved in an SVG file
(which is also an XML file).

Closes #15602.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75068 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -572,6 +572,7 @@ All:
 All (GUI):
 
 - Fix wxListEvent::GetData() in LLP64 builds.
+- Fix special characters handling in wxSVGFileDC::DrawText() (Ludovic Aubert).
 
 wxGTK:
 

src/common/dcsvg.cpp

@@ -27,6 +27,8 @@
 #include "wx/wfstream.h"
 #include "wx/filename.h"
 
+#include "wx/private/markupparser.h"
+
 // ----------------------------------------------------------
 // Global utilities
 // ----------------------------------------------------------
@@ -293,7 +295,7 @@ void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoor
     //text will be solid, unless alpha value isn't opaque in the foreground colour
     s += wxBrushString(m_textForegroundColour) + wxPenString(m_textForegroundColour);
     sTmp.Printf ( wxT("stroke-width:0;\"  transform=\"rotate( %s %d %d )  \" >"),  NumStr(-angle), x,y );
-    s += sTmp + sText + wxT("</text> ") + wxT("\n");
+    s += sTmp + wxMarkupParser::Quote(sText) + wxT("</text> ") + wxT("\n");
     if (m_OK)
     {
         write(s);