msg/msg_types: entity_addrvec_t::front()

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/msg/msg_types.h b/src/msg/msg_types.h
index 64080272651156db2ca07b9b168da6af080b2f49..736e96366538347c29ff19986eba4efd35ac4640 100644 (file)
--- a/src/msg/msg_types.h
+++ b/src/msg/msg_types.h
@@ -546,6 +546,12 @@ struct entity_addrvec_t {
     }
     return entity_addr_t();
   }
+  entity_addr_t front() const {
+    if (!v.empty()) {
+      return v.front();
+    }
+    return entity_addr_t();
+  }
 
   bool parse(const char *s, const char **end = 0);