patch 8.2.1828: build failure without the +eval feature

Problem:    Build failure without the +eval feature.
Solution:   Add dummys for ex_block and ex_endblock.

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1828,
 /**/
     1827,
 /**/