alloc: Don't require the old size in varena_realloc()

Instead, just look up which arena contains the pointer.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mtab.c b/src/mtab.c
index bf9fc53..7297421 100644
--- a/src/mtab.c
+++ b/src/mtab.c
@@ -101,7 +101,7 @@ static int bfs_mtab_add(struct bfs_mtab *mtab, const char *path, const char *typ
 shrink:
 	--mtab->nmounts;
 free:
-	varena_free(&mtab->varena, mount, size);
+	varena_free(&mtab->varena, mount);
 	return -1;
 }