[PATCH RESEND 1/2] btrfs-progs: check for no result before using results

[Anand Jain]

User space understands the ioctl BTRFS_IOC_DEV_REPLACE command status
using the struct btrfs_ioctl_dev_replace_args::result, and so userspace
initializes this to BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT, so exclude
this value in checking for the error.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
 cmds-replace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmds-replace.c b/cmds-replace.c
index b30e6c781e64..42de4de8c031 100644
--- a/cmds-replace.c
+++ b/cmds-replace.c
@@ -296,6 +296,8 @@ static int cmd_replace_start(int argc, char **argv)
                }
 
                if (start_args.result !=
+                   BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT &&
+                   start_args.result !=
                    BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR) {
                        error("ioctl(DEV_REPLACE_START) on '%s' returns error: 
%s",
                                path,
-- 
1.8.3.1