don't ignore start parameter in find_last_of()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@22700 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -186,6 +186,7 @@ All:
 - always NUL-terminate the log messages
 - wxRegEx::Compile() now calculates the number of groups correctly
 - wxHTTP::GetHeader() didn't find headers which not all in upper case
+- wxString::find_last_of() ignored "start" parameter (Robert Vazan)
 
 All (GUI):
 

src/common/string.cpp

@@ -1620,7 +1620,7 @@ size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
         wxASSERT( nStart <= Len() );
     }
 
-    for ( const wxChar *p = c_str() + length() - 1; p >= c_str(); p-- )
+    for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
     {
         if ( wxStrchr(sz, *p) )
             return p - c_str();