patch 9.0.2021: Coverity complains about change in charset

Problem:  Coverity complains about change in charset (after v9.0.2017)
Solution: check pointer t at index 0

closes: #13322

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index afcdadf..2c93546 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2021,
+/**/
     2020,
 /**/
     2019,