refs: add missing space in messages

Signed-off-by: Peter Krefting <peter@softwolves.pp.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

refs/files-backend.c

diff --git a/refs/files-backend.c b/refs/files-backend.c
index b2de84f..b859ddb 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -3073,7 +3073,7 @@ static int parse_and_write_reflog(struct files_ref_store *refs,
 		if (!(update->flags & REF_HAVE_OLD) ||
 		    !(update->flags & REF_HAVE_NEW) ||
 		    !(update->flags & REF_LOG_ONLY)) {
-			strbuf_addf(err, _("trying to write reflog for '%s'"
+			strbuf_addf(err, _("trying to write reflog for '%s' "
 					   "with incomplete values"), update->refname);
 			return REF_TRANSACTION_ERROR_GENERIC;
 		}

refs/reftable-backend.c

diff --git a/refs/reftable-backend.c b/refs/reftable-backend.c
index c0440b4..271d22a 100644
--- a/refs/reftable-backend.c
+++ b/refs/reftable-backend.c
@@ -1106,7 +1106,7 @@ static enum ref_transaction_error prepare_single_update(struct reftable_ref_stor
 		if (!(u->flags & REF_HAVE_OLD) ||
 		    !(u->flags & REF_HAVE_NEW) ||
 		    !(u->flags & REF_LOG_ONLY)) {
-			strbuf_addf(err, _("trying to write reflog for '%s'"
+			strbuf_addf(err, _("trying to write reflog for '%s' "
 					   "with incomplete values"), u->refname);
 			return REF_TRANSACTION_ERROR_GENERIC;
 		}