Improve error checking for situations like RDP_FD=42foo, or where the
provided number is out of range.

Suggestion by Yong Bakos.

Signed-off-by: Bryce Harrington <br...@osg.samsung.com>
---
 libweston/compositor-rdp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libweston/compositor-rdp.c b/libweston/compositor-rdp.c
index 79f0687..53c7124 100644
--- a/libweston/compositor-rdp.c
+++ b/libweston/compositor-rdp.c
@@ -1263,7 +1263,8 @@ rdp_backend_create(struct weston_compositor *compositor,
                }
 
                fd = strtoul(fd_str, &fd_tail, 10);
-               if (fd_tail == fd_str || rdp_peer_init(freerdp_peer_new(fd), b))
+               if (errno != 0 || fd_tail == fd_str || *fd_tail != '\0'
+                   || rdp_peer_init(freerdp_peer_new(fd), b))
                        goto err_output;
        }
 
-- 
1.9.1

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