Use wxScopedCharBuffer in To8BitData() in ANSI build too.

This allows one to write code compatible with both Unicode and ANSI
builds.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64789 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/string.h

@@ -1800,7 +1800,8 @@ public:
     // version for NUL-terminated data:
     static wxString From8BitData(const char *data)
       { return wxString(data); }
-    const char *To8BitData() const { return c_str(); }
+    const wxScopedCharBuffer To8BitData() const
+        { return wxScopedCharBuffer::CreateNonOwned(wx_str(), length()); }
 #endif // Unicode/ANSI
 
     // conversions with (possible) format conversions: have to return a

interface/wx/string.h

@@ -492,12 +492,7 @@ public:
 
         @see wxString::From8BitData()
     */
-    const char* To8BitData() const;
-
-    /**
-        @overload
-    */
-    const wxCharBuffer To8BitData() const;
+    const wxScopedCharBuffer To8BitData() const;
 
     /**
         Converts the string to an ASCII, 7-bit string in the form of