[meld] test: Fix raw escape sequences

[Kai Willadsen <kaiw src gnome org>]

commit 47ba752b7d870ee27671c59886dea332d97067a6
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Fri Jul 5 10:24:50 2019 +1000

    test: Fix raw escape sequences

 test/test_filediff.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/test/test_filediff.py b/test/test_filediff.py
index 59b9c256..3334d8e1 100644
--- a/test/test_filediff.py
+++ b/test/test_filediff.py
@@ -75,10 +75,10 @@ def test_filter_text(text, ignored_ranges, expected_text):
 
     filter_patterns = [
         '#.*',
-        '/\*.*\*/',
+        r'/\*.*\*/',
         'a(.*)b',
         'x(.*)y(.*)z',
-        '\$\w+:([^\n$]+)\$'
+        r'\$\w+:([^\n$]+)\$'
     ]
     filters = [
         FilterEntry.new_from_gsetting(("name", True, f), FilterEntry.REGEX)