[PATCH] t3419-*.sh: Fix arithmetic expansion syntax error

[Ramsay Jones <ramsay@ramsay1.demon.co.uk>]

Some shells, for example dash versions older than 0.5.4, need to
spell a variable reference as '$N' rather than 'N' in an arithmetic
expansion. In order to avoid the syntax error, we change the
offending variable reference from 'i' to '$i' in function scramble.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
---

Note that this test is unique in having an '#!/bin/bash' line (rather
than '#!/bin/sh'), which was (indirectly) responsible for me not
noticing this failure for a while. I don't see anything that would
require bash, so I suspect this is not intensional.

ATB,
Ramsay Jones

 t/t3419-rebase-patch-id.sh |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/t/t3419-rebase-patch-id.sh b/t/t3419-rebase-patch-id.sh
index 1aee483..6972b49 100755
--- a/t/t3419-rebase-patch-id.sh
+++ b/t/t3419-rebase-patch-id.sh
@@ -27,7 +27,7 @@ scramble()
 		then
 			echo "$x"
 		fi
-		i=$(((i+1) % 10))
+		i=$((($i+1) % 10))
 	done < "$1" > "$1.new"
 	mv -f "$1.new" "$1"
 }
-- 
1.7.3