patch 8.2.0498: Coverity complains about uninitialized field

Problem:    Coverity complains about uninitialized field.
Solution:   Initialize the whole typval_T.
diff --git a/src/version.c b/src/version.c
index 9ceed5a..f4415f2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    498,
+/**/
     497,
 /**/
     496,