BUILD: config: include tools.h in cfgparse-listen.c
Many functions defined in tools.h were called there but the file used
to be inherited via others.
diff --git a/src/cfgparse-listen.c b/src/cfgparse-listen.c
index d5df78c..5b49433 100644
--- a/src/cfgparse-listen.c
+++ b/src/cfgparse-listen.c
@@ -31,6 +31,7 @@
#include <haproxy/stats-t.h>
#include <haproxy/stick_table.h>
#include <haproxy/tcpcheck.h>
+#include <haproxy/tools.h>
#include <haproxy/uri_auth.h>
/* some keywords that are still being parsed using strcmp() and are not