t6200: avoid path mangling issue on Windows

[Johannes Sixt <j.sixt@viscovery.net>]

From: Johannes Sixt <j6t@kdbg.org>

MSYS bash interprets the slash in the argument core.commentchar="/"
as root directory and mangles it into a Windows style path. Use a
different core.commentchar to dodge the issue.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
---
 t/t6200-fmt-merge-msg.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/t/t6200-fmt-merge-msg.sh b/t/t6200-fmt-merge-msg.sh
index e7e945d..54b5744 100755
--- a/t/t6200-fmt-merge-msg.sh
+++ b/t/t6200-fmt-merge-msg.sh
@@ -179,8 +179,8 @@ test_expect_success '--log=5 with custom comment character' '
 	cat >expected <<-EOF &&
 	Merge branch ${apos}left${apos}
 
-	/ By Another Author (3) and A U Thor (2)
-	/ Via Another Committer
+	x By Another Author (3) and A U Thor (2)
+	x Via Another Committer
 	* left:
 	  Left #5
 	  Left #4
@@ -189,7 +189,7 @@ test_expect_success '--log=5 with custom comment character' '
 	  Common #1
 	EOF
 
-	git -c core.commentchar="/" fmt-merge-msg --log=5 <.git/FETCH_HEAD >actual &&
+	git -c core.commentchar="x" fmt-merge-msg --log=5 <.git/FETCH_HEAD >actual &&
 	test_cmp expected actual
 '
 
-- 
1.8.2.1.1678.gf713add