Allow jsonld array contains null value

app/helpers/jsonld_helper.rb

@@ -111,7 +111,7 @@ module JsonLdHelper
         patch_for_forwarding!(value, compacted_value)
       elsif value.is_a?(Array)
         compacted_value = [compacted_value] unless compacted_value.is_a?(Array)
-        return if value.size != compacted_value.size
+        next if value.size != compacted_value.size
 
         compacted[key] = value.zip(compacted_value).map do |v, vc|
           if v.is_a?(Hash) && vc.is_a?(Hash)

spec/helpers/jsonld_helper_spec.rb

@@ -100,6 +100,9 @@ describe JsonLdHelper do
             'obsolete' => 'http://ostatus.org#',
             'convo' => 'obsolete:conversation',
             'new' => 'https://obscure-unreleased-test.joinmastodon.org/#',
+            'fedibird' => 'http://fedibird.com/ns#',
+            'searchableBy' => { '@id' => 'fedibird:searchableBy', '@type' => '@id' },
+            'references' => { '@id' => 'fedibird:references', '@type' => '@id' },
           },
         ],
         'type' => 'Create',
@@ -115,6 +118,16 @@ describe JsonLdHelper do
               'href' => ['foo'],
             },
           ],
+          'searchableBy' => [nil],
+          'references' => {
+            'id' => 'https://streaming.kmy.blue/users/askyq/statuses/111091802894103697/references',
+            'type' => 'Collection',
+            'first' => {
+              'type' => 'CollectionPage',
+              'partOf' => 'https://streaming.kmy.blue/users/askyq/statuses/111091802894103697/references',
+              'items' => ['https://kmy.blue/users/askyq/statuses/111086477431146139'],
+            },
+          },
         },
         'signature' => {
           'type' => 'RsaSignature2017',
@@ -152,6 +165,14 @@ describe JsonLdHelper do
         expect(compacted.dig('object', 'tag', 0, 'href')).to eq ['foo']
         expect(safe_for_forwarding?(json, compacted)).to be true
       end
+
+      it 'is work with invalid array' do
+        json['object'].delete('convo')
+        compacted = compact(json)
+        patch_for_forwarding!(json, compacted)
+        expect(compacted.dig('object', 'searchableBy')).to eq []
+        expect(compacted.dig('object', 'references', 'first', 'items')).to eq ['https://kmy.blue/users/askyq/statuses/111086477431146139']
+      end
     end
 
     describe 'safe_for_forwarding?' do