Fix a few more leaks on failures

src/autocmd.c

@@ -3406,7 +3406,10 @@
 		event_dict = dict_alloc();
 		if (event_dict == NULL
 			|| list_append_dict(event_list, event_dict) == FAIL)
+		{
+		    vim_free(pat);
 		    return;
+		}
 
 		if (dict_add_string(event_dict, "event", event_name) == FAIL
 			|| dict_add_string(event_dict, "group",
@@ -3421,7 +3424,10 @@
 			|| dict_add_bool(event_dict, "once", ac->once) == FAIL
 			|| dict_add_bool(event_dict, "nested",
 							   ac->nested) == FAIL)
+		{
+		    vim_free(pat);
 		    return;
+		}
 	    }
 	}
     }

src/dict.c

@@ -1300,12 +1300,18 @@ dict_extend_func(
 
 	action = tv_get_string_chk(&argvars[2]);
 	if (action == NULL)
+	{
+	    if (is_new)
+		dict_unref(d1);
 	    return;
+	}
 	for (i = 0; i < 3; ++i)
 	    if (STRCMP(action, av[i]) == 0)
 		break;
 	if (i == 3)
 	{
+	    if (is_new)
+		dict_unref(d1);
 	    semsg(_(e_invalid_argument_str), action);
 	    return;
 	}

src/filepath.c

@@ -2110,6 +2110,7 @@ f_resolve(typval_T *argvars, typval_T *rettv)
 	if (buf == NULL)
 	{
 	    vim_free(p);
+	    vim_free(remain);
 	    goto fail;
 	}
 

src/map.c

@@ -2574,7 +2574,10 @@
 		if ((d = dict_alloc()) == NULL)
 		    return;
 		if (list_append_dict(rettv->vval.v_list, d) == FAIL)
+		{
+		    dict_unref(d);
 		    return;
+		}
 
 		keys_buf = NULL;
 		did_simplify = FALSE;

src/option.c

@@ -792,7 +792,10 @@ set_string_default_esc(char *name, char_u *val, int escape)
 
     opt_idx = findoption((char_u *)name);
     if (opt_idx < 0)
+    {
+	vim_free(p);
 	return;
+    }
 
     if (options[opt_idx].flags & P_DEF_ALLOCED)
 	vim_free(options[opt_idx].def_val[VI_DEFAULT]);

src/testdir/test_listdict.vim

@@ -1530,4 +1530,10 @@ func Test_indexof()
   delfunc TestIdx
 endfunc
 
+func Test_extendnew_leak()
+  " This used to leak memory
+  for i in range(100) | silent! call extendnew([], [], []) | endfor
+  for i in range(100) | silent! call extendnew({}, {}, {}) | endfor
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab