[Libguestfs] [PATCH] daemon: btrfs: fix bad handling of a couple of errors

[Pino Toscano]

Remove two wrong error handling situations in btrfs_balance_status:
- if the calloc for 'ret' fails, the 'goto error' would try to
  dereference the resulting null pointer (to free the items of the
  return struct); hence, just return null directly, instead of jumping
  to 'error'
- if the strdup() for 'btrfsbalance_status' fails, then the directly
  return would leak 'ret'
---
 daemon/btrfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/daemon/btrfs.c b/daemon/btrfs.c
index d363ada6d..26757d4fb 100644
--- a/daemon/btrfs.c
+++ b/daemon/btrfs.c
@@ -1686,7 +1686,7 @@ do_btrfs_balance_status (const char *path)
   ret = calloc (1, sizeof *ret);
   if (ret == NULL) {
     reply_with_perror ("calloc");
-    goto error;
+    return NULL;
   }
 
   /* Output of `btrfs balance status' is like:
@@ -1715,7 +1715,7 @@ do_btrfs_balance_status (const char *path)
     ret->btrfsbalance_status = strdup ("none");
     if (ret->btrfsbalance_status == NULL) {
       reply_with_perror ("strdup");
-      return NULL;
+      goto error;
     }
     return ret;
   }
-- 
2.13.6