patch 8.2.2536: Coverity complains about unchecked return value

Problem:    Coverity complains about unchecked return value.
Solution:   Add (void).
diff --git a/src/version.c b/src/version.c
index 66f3fc6..3f5ae9d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2536,
+/**/
     2535,
 /**/
     2534,