RichMedia.Parser.TTL.AwsSignedUrl: dialyzer fix

lib/pleroma/web/rich_media/parser/ttl/aws_signed_url.ex:9:callback_type_mismatch
Type mismatch for @callback ttl/2 in Pleroma.Web.RichMedia.Parser.TTL behaviour.

Expected type:
nil | integer()

Actual type:
{:error, <<_::64, _::size(8)>>} | {:ok, integer()}

lib/pleroma/web/rich_media/parser.ex

@@ -105,7 +105,7 @@ def ttl(data, url) do
           {:ok, integer() | :noop} | {:error, :no_key}
   def set_ttl_based_on_image(data, url) do
     case get_ttl_from_image(data, url) do
-      {:ok, ttl} when is_number(ttl) ->
+      ttl when is_number(ttl) ->
         ttl = ttl * 1000
 
         case @cachex.expire_at(:rich_media_cache, url, ttl) do

lib/pleroma/web/rich_media/parser/ttl/aws_signed_url.ex

@@ -45,6 +45,6 @@ defp get_expiration_timestamp(params) when is_map(params) do
       |> Map.get("X-Amz-Date")
       |> Timex.parse("{ISO:Basic:Z}")
 
-    {:ok, Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))}
+    Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))
   end
 end

test/pleroma/web/rich_media/parser/ttl/aws_signed_url_test.exs

@@ -22,7 +22,7 @@ test "s3 signed url is parsed correct for expiration time" do
     expire_time =
       Timex.parse!(timestamp, "{ISO:Basic:Z}") |> Timex.to_unix() |> Kernel.+(valid_till)
 
-    assert {:ok, expire_time} == Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl.ttl(metadata, url)
+    assert expire_time == Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl.ttl(metadata, url)
   end
 
   test "s3 signed url is parsed and correct ttl is set for rich media" do