mod_http_upload_quota: Apply cosmetic changes

Use "fun f/1" syntax in place of "fun(X) -> f(X) end".

src/mod_http_upload_quota.erl

@@ -251,7 +251,7 @@ terminate(Reason, #state{server_host = ServerHost, timers = Timers}) ->
     ?DEBUG("Stopping upload quota process for ~s: ~p", [ServerHost, Reason]),
     ejabberd_hooks:delete(http_upload_slot_request, ServerHost, ?MODULE,
 			  handle_slot_request, 50),
-    lists:foreach(fun(Timer) -> timer:cancel(Timer) end, Timers).
+    lists:foreach(fun timer:cancel/1, Timers).
 
 -spec code_change({down, _} | _, state(), _) -> {ok, state()}.
 
@@ -299,7 +299,7 @@ enforce_quota(UserDir, SlotSize, _OldSize, MinSize, MaxSize) ->
 			    {[Path | AccFiles], AccSize + Size, NewSize}
 		    end, {[], 0, 0}, Files),
     if OldSize + SlotSize > MaxSize ->
-	    lists:foreach(fun(File) -> del_file_and_dir(File) end, DelFiles),
+	    lists:foreach(fun del_file_and_dir/1, DelFiles),
 	    file:del_dir(UserDir), % In case it's empty, now.
 	    NewSize + SlotSize;
        true ->
@@ -314,7 +314,7 @@ delete_old_files(UserDir, CutOff) ->
 	[] ->
 	    ok;
 	OldFiles ->
-	    lists:foreach(fun(File) -> del_file_and_dir(File) end, OldFiles),
+	    lists:foreach(fun del_file_and_dir/1, OldFiles),
 	    file:del_dir(UserDir) % In case it's empty, now.
     end.