patch 8.2.1070: Vim9: leaking memory when lacking white space in dict

Problem:    Vim9: leaking memory when lacking white space in dict.
Solution:   Clear the typval.

src/dict.c

@@ -862,6 +862,7 @@ eval_dict(char_u **arg, typval_T *rettv, evalarg_T *evalarg, int literal)
 	if (vim9script && (*arg)[1] != NUL && !VIM_ISWHITE((*arg)[1]))
 	{
 	    semsg(_(e_white_after), ":");
+	    clear_tv(&tvkey);
 	    goto failret;
 	}
 

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1070,
 /**/
     1069,
 /**/