Tweak log length to fit JSON for members within two 4096-kb blocks.

controller/EmbeddedNetworkController.cpp

@@ -50,7 +50,7 @@ using json = nlohmann::json;
 #define ZT_NETCONF_CONTROLLER_API_VERSION 3
 
 // Number of requests to remember in member history
-#define ZT_NETCONF_DB_MEMBER_HISTORY_LENGTH 32
+#define ZT_NETCONF_DB_MEMBER_HISTORY_LENGTH 24
 
 // Min duration between requests for an address/nwid combo to prevent floods
 #define ZT_NETCONF_MIN_REQUEST_PERIOD 1000