patch 8.2.1233: Vim9: various errors not caught by try/catch

Problem:    Vim9: various errors not caught by try/catch.
Solution:   Do not bail out if an error is inside try/catch.

src/testdir/test_vim9_script.vim

@@ -17,6 +17,7 @@ let g:inc_counter = 1
 let $SOME_ENV_VAR = 'some'
 let g:alist = [7]
 let g:astring = 'text'
+let g:anumber = 123
 
 def Test_assignment()
   let bool1: bool = true
@@ -534,6 +535,13 @@ def Test_try_catch()
 
   try
     n = s:does_not_exist
+  catch /E121:/
+    n = 111
+  endtry
+  assert_equal(111, n)
+
+  try
+    n = g:does_not_exist
   catch /E121:/
     n = 121
   endtry
@@ -546,6 +554,50 @@ def Test_try_catch()
     n = 222
   endtry
   assert_equal(222, n)
+
+  try
+    n = -g:astring
+  catch /E39:/
+    n = 233
+  endtry
+  assert_equal(233, n)
+
+  try
+    n = +g:astring
+  catch /E1030:/
+    n = 244
+  endtry
+  assert_equal(244, n)
+
+  try
+    n = +g:alist
+  catch /E745:/
+    n = 255
+  endtry
+  assert_equal(255, n)
+
+  let nd: dict<any>
+  try
+    nd = {g:anumber: 1}
+  catch /E1029:/
+    n = 266
+  endtry
+  assert_equal(266, n)
+
+  try
+    [n] = [1, 2, 3]
+  catch /E1093:/
+    n = 277
+  endtry
+  assert_equal(277, n)
+
+  #  TODO: make this work
+  #  try
+  #    &ts = g:astring
+  #  catch /E1093:/
+  #    n = 288
+  #  endtry
+  #  assert_equal(288, n)
 enddef
 
 def ThrowFromDef()

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1233,
 /**/
     1232,
 /**/

src/vim9execute.c

@@ -1065,9 +1065,7 @@ call_def_function(
 		    if (di == NULL)
 		    {
 			semsg(_(e_undefvar), name);
-			if (trylevel > 0)
+			goto on_error;
-			    continue;
-			goto failed;
 		    }
 		    else
 		    {
@@ -1115,7 +1113,7 @@ call_def_function(
 		    {
 			semsg(_("E121: Undefined variable: %c:%s"),
 					     namespace, iptr->isn_arg.string);
-			goto failed;
+			goto on_error;
 		    }
 		    else
 		    {
@@ -2088,9 +2086,7 @@ call_def_function(
 			    case EXPR_SUB:  f1 = f1 - f2; break;
 			    case EXPR_ADD:  f1 = f1 + f2; break;
 			    default: emsg(_(e_modulus));
-				     if (trylevel > 0)
+				     goto on_error;
-					 continue;
-				     goto failed;
 			}
 			clear_tv(tv1);
 			clear_tv(tv2);
@@ -2144,9 +2140,7 @@ call_def_function(
 		    if (tv->v_type != VAR_LIST)
 		    {
 			emsg(_(e_listreq));
-			if (trylevel > 0)
+			goto on_error;
-			    continue;
-			goto failed;
 		    }
 		    list = tv->vval.v_list;
 
@@ -2154,18 +2148,14 @@ call_def_function(
 		    if (tv->v_type != VAR_NUMBER)
 		    {
 			emsg(_(e_number_exp));
-			if (trylevel > 0)
+			goto on_error;
-			    continue;
-			goto failed;
 		    }
 		    n = tv->vval.v_number;
 		    clear_tv(tv);
 		    if ((li = list_find(list, n)) == NULL)
 		    {
 			semsg(_(e_listidx), n);
-			if (trylevel > 0)
+			goto on_error;
-			    continue;
-			goto failed;
 		    }
 		    --ectx.ec_stack.ga_len;
 		    // Clear the list after getting the item, to avoid that it
@@ -2238,9 +2228,7 @@ call_def_function(
 		    if ((di = dict_find(dict, key, -1)) == NULL)
 		    {
 			semsg(_(e_dictkey), key);
-			if (trylevel > 0)
+			goto on_error;
-			    continue;
-			goto failed;
 		    }
 		    clear_tv(tv);
 		    --ectx.ec_stack.ga_len;
@@ -2291,7 +2279,7 @@ call_def_function(
 			)
 		{
 		    emsg(_(e_number_exp));
-		    goto failed;
+		    goto on_error;
 		}
 #ifdef FEAT_FLOAT
 		if (tv->v_type == VAR_FLOAT)
@@ -2307,10 +2295,10 @@ call_def_function(
 
 		    tv = STACK_TV_BOT(-1);
 		    if (check_not_string(tv) == FAIL)
-			goto failed;
+			goto on_error;
 		    (void)tv_get_number_chk(tv, &error);
 		    if (error)
-			goto failed;
+			goto on_error;
 		}
 		break;
 
@@ -2329,7 +2317,7 @@ call_def_function(
 			semsg(_("E1029: Expected %s but got %s"),
 				    vartype_name(ct->ct_type),
 				    vartype_name(tv->v_type));
-			goto failed;
+			goto on_error;
 		    }
 		}
 		break;
@@ -2348,7 +2336,7 @@ call_def_function(
 		    {
 			semsg(_("E1093: Expected %d items but got %d"),
 				     min_len, list == NULL ? 0 : list->lv_len);
-			goto failed;
+			goto on_error;
 		    }
 		}
 		break;
@@ -2403,6 +2391,11 @@ call_def_function(
 		clear_tv(STACK_TV_BOT(0));
 		break;
 	}
+	continue;
+
+on_error:
+	if (trylevel == 0)
+	    goto failed;
     }
 
 done: