minor corrections to TranslateFromUnicodeFormat()

- Don't try to dereference end() iteratorm this will fail (unlike comparing
  pointer with NUL)
- Use prefix rather than postfix increment for iterator
- Use wxUniChar::GetValue() rather than cast to char for consistency with
  other switch statements in the same file


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59880 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/datetimefmt.cpp

@@ -1073,20 +1073,22 @@ static wxString GetLocaleDateFormat()
 
 static wxString TranslateFromUnicodeFormat(const wxString& fmt)
 {
-
     wxString fmtWX;
 
     wxChar chLast = _T('\0');
     size_t lastCount = 0;
-    for ( wxString::const_iterator p = fmt.begin(); /* NUL handled inside */; p++ )
+    for ( wxString::const_iterator p = fmt.begin(); /* end handled inside */; ++p )
     {
-        if ( *p == chLast )
+        if ( p == fmt.end() || *p == chLast )
         {
             lastCount++;
+            if ( p == fmt.end() )
+                break;
+
             continue;
         }
 
-        switch ( (char) *p )
+        switch ( (*p).GetValue() )
         {
             // these characters come in groups, start counting them
             case _T('d'):
@@ -1239,8 +1241,6 @@ static wxString TranslateFromUnicodeFormat( const wxString& fmt)
 
                 // not a special character so must be just a separator,
                 // treat as is
-                if ( *p != _T('\0') )
-                {
                 if ( *p == _T('%') )
                 {
                     // this one needs to be escaped
@@ -1251,10 +1251,6 @@ static wxString TranslateFromUnicodeFormat( const wxString& fmt)
         }
     }
 
-        if ( *p == _T('\0') )
-            break;
-    }
-
     return fmtWX;
 }