patch 8.1.0918: MS-Windows: startup messages are not converted

Problem:    MS-Windows: startup messages are not converted.
Solution:   Convert messages when the current codepage differs from
            'encoding'. (Yasuhiro Matsumoto, closes #3914)

src/version.c

@@ -783,6 +783,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    918,
 /**/
     917,
 /**/