write_prometheus: plug a small leak

Found by scan-build

diff --git a/src/write_prometheus.c b/src/write_prometheus.c
index 991415ef08713ddb7939e63fd7d5d196a3d35981..6b77712e8ed0ab37b5a09dcb0728bb75f96d0ce6 100644 (file)
--- a/src/write_prometheus.c
+++ b/src/write_prometheus.c
@@ -694,8 +694,10 @@ metric_family_get(data_set_t const *ds, value_list_t const *vl, size_t ds_index,
     return fam;
   }
 
-  if (!allocate)
+  if (!allocate) {
+    sfree(name);
     return NULL;
+  }
 
   fam = metric_family_create(name, ds, vl, ds_index);
   if (fam == NULL) {