patch 8.2.2028: Coverity warns for using an uninitialized variable

Problem:    Coverity warns for using an uninitialized variable.
Solution:   Initialize to NULL.

Author: brammool

src/eval.c

@@ -791,7 +791,7 @@ get_lval(
     listitem_T	*ni;
     char_u	*key = NULL;
     int		len;
-    hashtab_T	*ht;
+    hashtab_T	*ht = NULL;
     int		quiet = flags & GLV_QUIET;
 
     // Clear everything in "lp".

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2028,
 /**/
     2027,
 /**/