git-bisect.sh: don't accidentally override existing branch "bisect"

diff --git a/t/t7002-grep.sh b/t/t7002-grep.sh
index 68b2b92879c5e187a33d34d3daf54bb3c131e40f..c8b4f65f380f3941c75bd6ed52975777d2b28d67 100755 (executable)
--- a/t/t7002-grep.sh
+++ b/t/t7002-grep.sh
@@ -107,8 +107,8 @@ do
                diff expected actual
        '
 
-        test_expect_failure "grep -c $L (no /dev/null)" '
-               git grep -c test $H | grep -q "/dev/null"
+       test_expect_success "grep -c $L (no /dev/null)" '
+               ! git grep -c test $H | grep -q /dev/null
         '
 
 done