CLEANUP: compression: don't allocate DEFAULT_MAXZLIBMEM without USE_ZLIB
It's pointless to reserve this amount of memory when zlib is not used.
Adding the condition will make build scripts easier to manage. This may
be backported to 1.6.
diff --git a/src/haproxy.c b/src/haproxy.c
index 973af29..6e75f72 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -134,7 +134,7 @@
.nbproc = 1,
.req_count = 0,
.logsrvs = LIST_HEAD_INIT(global.logsrvs),
-#ifdef DEFAULT_MAXZLIBMEM
+#if defined(USE_ZLIB) && defined(DEFAULT_MAXZLIBMEM)
.maxzlibmem = DEFAULT_MAXZLIBMEM * 1024U * 1024U,
#else
.maxzlibmem = 0,