xread/xwrite: clip MAX_IO_SIZE to SSIZE_MAX

diff --git a/contrib/examples/git-reset.sh b/contrib/examples/git-reset.sh
index 1dc606fbd3fd29f5f4c9928a2518df46109ef449..bafeb52cd113ad8a07ffd1912191f2bc17a7ef7a 100755 (executable)
--- a/contrib/examples/git-reset.sh
+++ b/contrib/examples/git-reset.sh
@@ -11,7 +11,7 @@ require_work_tree
 update= reset_type=--mixed
 unset rev
 
-while case $# in 0) break ;; esac
+while test $# != 0
 do
        case "$1" in
        --mixed | --soft | --hard)