ci/test: change patch and its target to work on MacOS

cue-test.py

@@ -863,7 +863,8 @@ class TestHooks(unittest.TestCase):
             pass
         with open(self.bla_file, 'w') as f:
             f.write('''LINE1=YES
-LINE2=NO''')
+LINE2=NO
+''')
 
     def test_patchfile(self):
         hook = os.path.join(builddir, 'test.patch')

test.patch

@@ -1,7 +1,7 @@
 diff -ruN a/bla.txt b/bla.txt
 --- a/bla.txt	2020-06-19 18:54:43.129076711 +0200
 +++ b/bla.txt	2020-06-19 18:55:05.093948316 +0200
-@@ -1,3 +1,3 @@
+@@ -1,2 +1,2 @@
 -LINE1=YES
 +LINE1=NO
  LINE2=NO