BUILD: listener: include proxy.h from listener.c
Many proxy functions are called there but the include was missing and
inherited via cfgparse.h.
diff --git a/src/listener.c b/src/listener.c
index 226b629..8031c75 100644
--- a/src/listener.c
+++ b/src/listener.c
@@ -28,8 +28,8 @@
#include <haproxy/list.h>
#include <haproxy/listener.h>
#include <haproxy/log.h>
-#include <haproxy/protocol-t.h>
#include <haproxy/protocol.h>
+#include <haproxy/proxy.h>
#include <haproxy/sample.h>
#include <haproxy/stream.h>
#include <haproxy/task.h>