patch 8.2.1880: Vim9: asan complains about adding zero to NULL

Problem:    Vim9: Asan complains about adding zero to NULL.
Solution:   Check for argument count first.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1880,
 /**/
     1879,
 /**/