patch 8.2.2093: Vim9: script test sometimes fails

Problem:    Vim9: script test sometimes fails.
Solution:   Do not find a script variable by its typval if the name was
            cleared.

Author: brammool

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2093,
 /**/
     2092,
 /**/

src/vim9script.c

@@ -741,7 +741,9 @@ find_typval_in_script(typval_T *dest)
     {
 	svar_T    *sv = ((svar_T *)si->sn_var_vals.ga_data) + idx;
 
-	if (sv->sv_tv == dest)
+	// If "sv_name" is NULL the variable was hidden when leaving a block,
+	// don't check "sv_tv" then, it might be used for another variable now.
+	if (sv->sv_name != NULL && sv->sv_tv == dest)
 	    return sv;
     }
     iemsg("check_script_var_type(): not found");