patch 8.2.2083: Vim9: crash when using ":silent!" and getting member fails

Problem:    Vim9: crash when using ":silent!" and getting member fails.
Solution:   Jump to on_fatal_error. (closes #7412)

src/testdir/test_vim9_func.vim

@@ -1768,5 +1768,19 @@ def Test_reset_did_emsg()
   CheckScriptFailure(lines, 'E492:', 8)
 enddef
 
+def Test_abort_even_with_silent()
+  var lines =<< trim END
+      vim9script
+      g:result = 'none'
+      def Func()
+        eval {-> ''}() .. '' .. {}['X']
+        g:result = 'yes'
+      enddef
+      sil! Func()
+      assert_equal('none', g:result)
+  END
+  CheckScriptSuccess(lines)
+enddef
+
 
 " vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2083,
 /**/
     2082,
 /**/

src/vim9execute.c

@@ -2669,12 +2669,12 @@ call_def_function(
 		    {
 			SOURCING_LNUM = iptr->isn_lnum;
 			semsg(_(e_dictkey), key);
-			goto on_error;
+			goto on_fatal_error;
 		    }
 		    clear_tv(tv);
 		    --ectx.ec_stack.ga_len;
-		    // Clear the dict after getting the item, to avoid that it
+		    // Clear the dict only after getting the item, to avoid
-		    // make the item invalid.
+		    // that it makes the item invalid.
 		    tv = STACK_TV_BOT(-1);
 		    temp_tv = *tv;
 		    copy_tv(&di->di_tv, tv);
@@ -2997,10 +2997,12 @@ func_return:
 	continue;
 
 on_error:
+	// Jump here for an error that does not require aborting execution.
 	// If "emsg_silent" is set then ignore the error.
 	if (did_emsg_cumul + did_emsg == did_emsg_before && emsg_silent)
 	    continue;
-
+on_fatal_error:
+	// Jump here for an error that messes up the stack.
 	// If we are not inside a try-catch started here, abort execution.
 	if (trylevel <= trylevel_at_start)
 	    goto failed;