update-index: do not die too early in a read-only repository.

diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index 1bc5b7a41295426dfdd0b75aaf7b2ec4226f257a..adf4993bacf05b4ccb0b447910dda6a2c453bc83 100755 (executable)
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -109,12 +109,10 @@ index d99af23..8b32fb5 100644
 +      whitespace at beginning
  whitespace change
 -whitespace in the middle
--whitespace at end
 +white space in the middle
-+whitespace at end  
+ whitespace at end
  unchanged line
--CR at endQ
-+CR at end
+ CR at endQ
 EOF
 git-diff -b > out
 test_expect_success 'another test, with -b' 'diff -u expect out'