BUG/MINOR: peers: avoid an infinite loop with peers_fe is NULL

Fix an infinite loop which was added in an attempt to fix #558.
If the peers_fe is NULL, it will loop forever.

Must be backported with a2cfd7e as far as 1.8.

(cherry picked from commit 3ef2d565303af6dd7c24b62fdb22e43f1d1638bf)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 4907d7f6a13e403dea5a7bbb2e3a9923fa587807)
Signed-off-by: Willy Tarreau <w@1wt.eu>
1 file changed