Make spillway OTP 27 compatible

Author: raz-adroll

src/spillway_srv.erl

@@ -34,6 +34,8 @@
 
 -record(counter, {name, value = 0 :: non_neg_integer()}).
 
+-elvis([{elvis_style, dont_repeat_yourself, disable}]).
+
 %%%===================================================================
 %%% External functions
 %%%===================================================================
@@ -68,24 +70,27 @@ enter(Name, Size, Limit) when Size > 0 ->
 
 %% Attempt to decrement the named counter, with a lower limit of 0.  Return the new value.
 %% The counter must already exist.
+-if(?OTP_RELEASE =< 25).
+
 -spec leave(term(), non_neg_integer()) -> non_neg_integer().
 leave(Name, Size) ->
-    Counter =
-        case ets:update_counter(?TID, Name, {#counter.value, -Size, 0, 0}) of
-            [] ->
-                0;
-            [Result | _] ->
-                Result;
-            Result ->
-                Result
-        end,
-    case Counter >= 0 of
-        true ->
-            Counter;
-        false ->
-            0
+    ets:update_counter(?TID, Name, {#counter.value, -Size, 0, 0}).
+
+- else .
+
+-spec leave(term(), non_neg_integer()) -> non_neg_integer().
+leave(Name, Size) ->
+    case ets:update_counter(?TID, Name, {#counter.value, -Size, 0, 0}) of
+        [] ->
+            0;
+        [Result | _] ->
+            Result;
+        Result ->
+            Result
     end.
 
+-endif.
+
 %% Return the current counter value.
 -spec cur(term()) -> non_neg_integer().
 cur(Name) ->