updated for version 7.4.506

Problem:    MS-Windows: Cannot open a file with 259 characters.
Solution:   Fix off-by-one error. (Ken Takata)

Author: brammool

src/os_mswin.c

@@ -411,7 +411,7 @@ mch_FullName(
 	     * - convert the result from UCS2 to 'encoding'.
 	     */
 	    wname = enc_to_utf16(fname, NULL);
-	    if (wname != NULL && _wfullpath(wbuf, wname, MAX_PATH - 1) != NULL)
+	    if (wname != NULL && _wfullpath(wbuf, wname, MAX_PATH) != NULL)
 	    {
 		cname = utf16_to_enc((short_u *)wbuf, NULL);
 		if (cname != NULL)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    506,
 /**/
     505,
 /**/