Fix bug with too many field values in a structure literal.

src/check_expr.c

@@ -5391,18 +5391,17 @@ ExprKind check_expr_base_internal(Checker *c, Operand *o, AstNode *node, Type *t
 							error_node(elem, "Mixture of `field = value` and value elements in a structure literal is not allowed");
 							continue;
 						}
-						Entity *field = t->Record.fields_in_src_order[index];
+						if (index >= field_count) {
+							error_node(o->expr, "Too many values in structure literal, expected %td", field_count);
+							break;
+						}
 
+						Entity *field = t->Record.fields_in_src_order[index];
 						if (!all_fields_are_blank && str_eq(field->token.string, str_lit("_"))) {
 							// NOTE(bill): Ignore blank identifiers
 							continue;
 						}
-
 						check_expr(c, o, elem);
-						if (index >= field_count) {
-							error_node(o->expr, "Too many values in structure literal, expected %td", field_count);
-							break;
-						}
 
 						if (!check_is_field_exported(c, field)) {
 							gbString t = type_to_string(type);