chore(src): fix dialyzer warnings (match values)

apps/emqx_lwm2m/src/emqx_lwm2m_protocol.erl

@@ -121,7 +121,7 @@ update_reg_info(NewRegInfo, Lwm2mState = #lwm2m_state{
 
     UpdatedRegInfo = maps:merge(RegInfo, NewRegInfo),
 
-    case proplists:get_value(update_msg_publish_condition,
+    _ = case proplists:get_value(update_msg_publish_condition,
             lwm2m_coap_responder:options(), contains_object_list) of
         always ->
             send_to_broker(<<"update">>, #{<<"data">> => UpdatedRegInfo}, Lwm2mState);

apps/emqx_management/src/emqx_mgmt_api_pubsub.erl

@@ -167,7 +167,7 @@ do_publish(_ClientId, [], _Qos, _Retain, _Payload) ->
 do_publish(ClientId, Topics, Qos, Retain, Payload) ->
     MsgIds = lists:map(fun(Topic) ->
         Msg = emqx_message:make(ClientId, Qos, Topic, Payload),
-        emqx_mgmt:publish(Msg#message{flags = #{retain => Retain}}),
+        _ = emqx_mgmt:publish(Msg#message{flags = #{retain => Retain}}),
         emqx_guid:to_hexstr(Msg#message.id)
     end, Topics),
     {ok, MsgIds}.

apps/emqx_management/src/emqx_mgmt_data_backup.erl

@@ -237,11 +237,11 @@ import_resources_and_rules(Resources, Rules, FromVersion)
                                           <<"url">> => URL,
                                           <<"verify">> => true},
                               NResource = Resource#{<<"config">> := NConfig},
-                              import_resource(NResource),
+                              {ok, _Resource} = import_resource(NResource),
                               NHeaders = maps:put(<<"content-type">>, ContentType, Headers),
                               [{ID, #{headers => NHeaders, method => Method}} | Acc];
                              (Resource, Acc) ->
-                              import_resource(Resource),
+                              {ok, _Resource} = import_resource(Resource),
                               Acc
                           end, [], Resources),
     lists:foreach(fun(#{<<"actions">> := Actions} = Rule) ->

apps/emqx_rule_engine/src/emqx_rule_registry.erl

@@ -407,8 +407,8 @@ delete_resource_type(Type) ->
 init([]) ->
     %% Enable stats timer
     ok = emqx_stats:update_interval(rule_registery_stats, fun update_stats/0),
-    ets:new(?KV_TAB, [named_table, set, public, {write_concurrency, true},
-        {read_concurrency, true}]),
+    _TableId = ets:new(?KV_TAB, [named_table, set, public, {write_concurrency, true},
+                                 {read_concurrency, true}]),
     {ok, #{}}.
 
 handle_call({add_rules, Rules}, _From, State) ->

apps/emqx_web_hook/src/emqx_web_hook_app.erl

@@ -30,7 +30,7 @@ start(_StartType, _StartArgs) ->
     translate_env(),
     {ok, Sup} = emqx_web_hook_sup:start_link(),
     {ok, PoolOpts} = application:get_env(?APP, pool_opts),
-    ehttpc_sup:start_pool(?APP, PoolOpts),
+    {ok, _Pid} = ehttpc_sup:start_pool(?APP, PoolOpts),
     emqx_web_hook:register_metrics(),
     emqx_web_hook:load(),
     {ok, Sup}.

lib-ce/emqx_modules/src/emqx_modules_app.erl

@@ -25,7 +25,7 @@
 start(_Type, _Args) ->
     % the configs for emqx_modules is so far still in emqx application
     % Ensure it's loaded
-    application:load(emqx),
+    _ = application:load(emqx),
     {ok, Pid} = emqx_mod_sup:start_link(),
     ok = emqx_modules:load(),
     emqx_ctl:register_command(modules, {emqx_modules, cli}, []),