BUG/MINOR: trace: Test server existence for health-checks to get proxy

Email alerts are based on health-checks but with no server. Thus, in
__trace() function, responsible to write a trace message, we must be
prepared to have no server and thus no proxy.

This patch must be backported as far as 2.4.

diff --git a/src/trace.c b/src/trace.c
index 541acf2..5909dd4 100644 (file)
--- a/src/trace.c
+++ b/src/trace.c
@@ -144,7 +144,7 @@ void __trace(enum trace_level level, uint64_t mask, struct trace_source *src,
        }
        if (check) {
                srv = check->server;
-               be = srv->proxy;
+               be = (srv ? srv->proxy : NULL);
        }
 
        if (!srv && conn)