[PATCH 06/10] reftable/stack: fix broken refnames in `write_n_ref_tables()`

The `write_n_ref_tables()` helper function writes N references in
separate tables. We never reset the computed name of those references
though, leading us to end up with unexpected names.

Fix this by resetting the buffer.

Signed-off-by: Patrick Steinhardt <redacted>
---
 reftable/stack_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/reftable/stack_test.c b/reftable/stack_test.c
index 42044ed8a3..de0669b7b8 100644
--- a/reftable/stack_test.c
+++ b/reftable/stack_test.c

@@ -125,6 +125,7 @@ static void write_n_ref_tables(struct reftable_stack *st,
 			.value_type = REFTABLE_REF_VAL1,
 		};
 
+		strbuf_reset(&buf);
 		strbuf_addf(&buf, "refs/heads/branch-%04u", (unsigned) i);
 		ref.refname = buf.buf;
 		set_test_hash(ref.value.val1, i);

-- 
2.46.0.164.g477ce5ccd6.dirty