fs: fix readlink() return value

The fs.readlink() function incorrectly produced a JSON string containing
trailing null bytes.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/fs.c b/lib/fs.c
index c6066cc..a784b23 100644
--- a/lib/fs.c
+++ b/lib/fs.c
@@ -442,7 +442,7 @@ uc_fs_readlink(uc_vm *vm, size_t nargs)
 	}
 	while (true);
 
-	res = json_object_new_string_len(buf, buflen);
+	res = json_object_new_string_len(buf, rv);
 
 	free(buf);