Fix regression introduced by b7f69f7

The count argument was being ignored in certain cases.

Fixes #510

lib/i18n/backend/pluralization.rb

@@ -29,7 +29,7 @@ module Pluralization
       # either pick a special :zero translation even for languages where the
       # pluralizer does not return a :zero key.
       def pluralize(locale, entry, count)
-        return entry unless entry.is_a?(Hash) && count && entry.values.none? { |v| v.is_a?(Hash) }
+        return entry unless entry.is_a?(Hash) && count
 
         pluralizer = pluralizer(locale)
         if pluralizer.respond_to?(:call)

test/backend/pluralization_scope_test.rb

@@ -0,0 +1,55 @@
+require 'test_helper'
+
+class I18nBackendPluralizationScopeTest < I18n::TestCase
+  class Backend < I18n::Backend::Simple
+    include I18n::Backend::Pluralization
+    include I18n::Backend::Fallbacks
+  end
+
+  def setup
+    super
+    I18n.default_locale = :'en'
+    I18n.backend = Backend.new
+
+    translations = {
+      i18n: {
+        plural: {
+          keys: [:one, :other],
+          rule: lambda { |n| n == 1 ? :one : :other },
+        }
+      },
+      activerecord: {
+        models: {
+          my_model: {
+            one: 'one model',
+            other: 'more models',
+            some_other_key: {
+              key: 'value'
+            }
+          }
+        }
+      }
+    }
+
+    store_translations('en', translations)
+  end
+
+  test "pluralization picks :other for 2" do
+    args = {
+      scope: [:activerecord, :models],
+      count: 2,
+      default: ["My model"]
+    }
+    assert_equal 'more models', I18n.translate(:my_model, args)
+  end
+
+  test "pluralization picks :one for 1" do
+    args = {
+      scope: [:activerecord, :models],
+      count: 1,
+      default: ["My model"]
+    }
+    assert_equal 'one model', I18n.translate(:my_model, args)
+  end
+
+end