patch 8.2.0245: MSVC: error message if the auto directory already exists

Problem:    MSVC: error message if the auto directory already exists.
Solution:   Add "if not exists". (Ken Takata, closes #5620)
diff --git a/src/version.c b/src/version.c
index 2c14352..8e3f20a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    245,
+/**/
     244,
 /**/
     243,