[gtk/wip/baedert/css-values] testsuite: Update expected css errors

[Timm Bäder <baedert src gnome org>]

commit 1bee16ad13f193665b952568544c376bde66cf39
Author: Timm Bäder <mail baedert org>
Date:   Thu Jan 16 09:56:46 2020 +0100

    testsuite: Update expected css errors

 testsuite/css/parser/text-shadow-invalid-but-worked-in-3.12.errors | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/testsuite/css/parser/text-shadow-invalid-but-worked-in-3.12.errors 
b/testsuite/css/parser/text-shadow-invalid-but-worked-in-3.12.errors
index 5635b5440a..461aecc730 100644
--- a/testsuite/css/parser/text-shadow-invalid-but-worked-in-3.12.errors
+++ b/testsuite/css/parser/text-shadow-invalid-but-worked-in-3.12.errors
@@ -1,2 +1,3 @@
 text-shadow-invalid-but-worked-in-3.12.css:2:16-21: error: GTK_CSS_PARSER_ERROR_SYNTAX
+text-shadow-invalid-but-worked-in-3.12.css:2:16-21: error: GTK_CSS_PARSER_ERROR_SYNTAX
 text-shadow-invalid-but-worked-in-3.12.css:6:22-23: error: GTK_CSS_PARSER_ERROR_SYNTAX