git-commit.sh: Fix usage checks regarding paths given when they do not make sense

The checks that looked for paths given to git-commit in addition to
--all or --interactive expected only 3 values, while the case statement
actually provides 4, so the check was never triggered.

The bug was introduced in 6cbf07efc5 when
the case statement was extended to handle --interactive.

Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-commit.sh

@@ -322,9 +322,9 @@ unset only
 case "$all,$interactive,$also,$#" in
 *t,*t,*)
 	die "Cannot use -a, --interactive or -i at the same time." ;;
-t,,[1-9]*)
+t,,,[1-9]*)
 	die "Paths with -a does not make sense." ;;
-,t,[1-9]*)
+,t,,[1-9]*)
 	die "Paths with --interactive does not make sense." ;;
 ,,t,0)
 	die "No paths with -i does not make sense." ;;