patch 8.2.4000: Coverity warns for checking for NULL pointer after using it

Problem:    Coverity warns for checking for NULL pointer after using it.
Solution:   Remove check for NULL.
diff --git a/src/version.c b/src/version.c
index 2c280af..83e054a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4000,
+/**/
     3999,
 /**/
     3998,