nspawn: Fix erroneous OOM when building group list

change_uid_gid() never initialises sz which may cause greedy_realloc to
skip the initial buffer allocation.

diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 84724d59c9177cae9a16acafb70c4c24f8340525..0bd52da56843df40b31cd6227f4a6747491b6c8c 100644 (file)
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -2366,7 +2366,7 @@ static int change_uid_gid(char **_home) {
         _cleanup_fclose_ FILE *f = NULL;
         _cleanup_close_ int fd = -1;
         unsigned n_uids = 0;
-        size_t sz, l;
+        size_t sz = 0, l;
         uid_t uid;
         gid_t gid;
         pid_t pid;