ignore EventServicePrefix when its empty ("")

diff --git a/src/write_riemann.c b/src/write_riemann.c
index 32c034c..7f0211f 100644 (file)
--- a/src/write_riemann.c
+++ b/src/write_riemann.c
@@ -570,14 +570,14 @@ static Event *riemann_value_to_protobuf (struct riemann_host const *host, /* {{{
                        /* host = */ "", vl->plugin, vl->plugin_instance,
                        vl->type, vl->type_instance);
        if (host->always_append_ds || (ds->ds_num > 1))
-               if (host->prefix == NULL)
+               if (host->prefix == NULL || host->prefix[0] == '\0')
                        ssnprintf (service_buffer, sizeof (service_buffer),
                                        "%s/%s", &name_buffer[1], ds->ds[index].name);
                else
                        ssnprintf (service_buffer, sizeof (service_buffer),
                                        "%s/%s/%s", host->prefix, &name_buffer[1], ds->ds[index].name);
        else
-               if (host->prefix == NULL)
+               if (host->prefix == NULL || host->prefix[0] == '\0')
                        sstrncpy (service_buffer, &name_buffer[1],
                                        sizeof (service_buffer));
                else