BUG/MEDIUM: lua: fix crash when using bogus mode in register_service()
When using an incorrect 'mode' as 2nd argument of core.register_service(),
HAProxy crashes while displaying the error message.
To be backported to 1.8, 1.7 and 1.6.
diff --git a/src/hlua.c b/src/hlua.c
index 2c28e67..abd096d 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -6871,7 +6871,7 @@
akl->kw[0].parse = action_register_service_http;
else
WILL_LJMP(luaL_error(L, "lua service environment '%s' is unknown. "
- "'tcp' or 'http' are expected."));
+ "'tcp' or 'http' are expected.", env));
akl->kw[0].match_pfx = 0;
akl->kw[0].private = fcn;