X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fwrite_prometheus.c;h=14d78bb18dbc469fa39918f8aa801a31c53da7e8;hb=57b9e83320b35d4dbd1312db5fbf33ddf8ecd989;hp=61c43fed7ae921265e049c663804a92e0273a060;hpb=446138394bb95c49d0e05ea440fbf63aefe84bab;p=collectd.git

diff --git a/src/write_prometheus.c b/src/write_prometheus.c
index 61c43fed..14d78bb1 100644
--- a/src/write_prometheus.c
+++ b/src/write_prometheus.c
@@ -546,9 +546,14 @@ metric_family_delete_metric(Io__Prometheus__Client__MetricFamily *fam,
             ((fam->n_metric - 1) - i) * sizeof(fam->metric[i]));
   fam->n_metric--;
 
+  if (fam->n_metric == 0) {
+    sfree(fam->metric);
+    return 0;
+  }
+
   Io__Prometheus__Client__Metric **tmp =
       realloc(fam->metric, fam->n_metric * sizeof(*fam->metric));
-  if ((tmp != NULL) || (fam->n_metric == 0))
+  if (tmp != NULL)
     fam->metric = tmp;
 
   return 0;