Fix id check

src/invidious/routes/api/v1/authenticated.cr

@@ -81,7 +81,7 @@ module Invidious::Routes::API::V1::Authenticated
       return error_json(409, "Watch history is disabled in preferences.")
     end
 
-    id = env.params.url["id"]?.try &.as(String)
+    id = env.params.url["id"]
     if !id.match(/[a-zA-Z0-9_-]{11}/)
       return error_json(400, "Invalid video id.")
     end
@@ -97,7 +97,7 @@ module Invidious::Routes::API::V1::Authenticated
       return error_json(409, "Watch history is disabled in preferences.")
     end
 
-    id = env.params.url["id"]?.try &.as(String)
+    id = env.params.url["id"]
     if !id.match(/[a-zA-Z0-9_-]{11}/)
       return error_json(400, "Invalid video id.")
     end