fix substr() calls broken by r56215 (#10198)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56868 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/xml/xml.cpp b/src/xml/xml.cpp
index 0193e5a8591c9ae56702c1394215f6a42e9b31d7..1555d29b726810f2d062b5204dcaef0b7e578cc9 100644 (file)
--- a/src/xml/xml.cpp
+++ b/src/xml/xml.cpp
@@ -825,10 +825,11 @@ bool OutputStringEnt(wxOutputStream& stream,
     {
         wxChar c = str.GetChar(i);
         if (c == wxS('<') || c == wxS('>') ||
-            (c == wxS('&') && str.Mid(i+1, 4) != wxS("amp;")) ||
+            (c == wxS('&') && str.substr(i+1, 4) != wxS("amp;")) ||
             ((flags & XML_ESCAPE_QUOTES) && c == wxS('"')))
         {
-            if ( !OutputString(stream, str.substr(last, i), convMem, convFile) )
+            if ( !OutputString(stream, str.substr(last, i - last),
+                               convMem, convFile) )
                 return false;
 
             const char *escaped;
@@ -858,7 +859,7 @@ bool OutputStringEnt(wxOutputStream& stream,
         }
     }
 
-    return OutputString(stream, str.substr(last, i), convMem, convFile);
+    return OutputString(stream, str.substr(last, i - last), convMem, convFile);
 }
 
 bool OutputIndentation(wxOutputStream& stream,