Fix Ameba warnings

src/invidious/routes/images.cr

@@ -108,8 +108,8 @@ module Invidious::Routes::Images
 
     # Some thumbnails such as the ones for chapters requires some additional queries.
     query_params = HTTP::Params.new
-    {"sqp", "rs"}.each do |name|
-      query_params[name] = env.params.query[name] if env.params.query[name]?
+    {"sqp", "rs"}.each do |attest_param|
+      query_params[attest_param] = env.params.query[attest_param] if env.params.query[attest_param]?
     end
 
     headers = HTTP::Headers.new

src/invidious/videos/chapters.cr

@@ -57,7 +57,7 @@ module Invidious::Videos
 
     # Converts the sequence of chapters to a WebVTT representation
     def to_vtt
-      vtt = WebVTT.build do |build|
+      return WebVTT.build do |build|
         self.each do |chapter|
           build.cue(chapter.start_ms, chapter.end_ms, chapter.title)
         end

src/invidious/videos/parser.cr

@@ -275,10 +275,6 @@ def parse_video_info(video_id : String, player_response : Hash(String, JSON::Any
   # If nothing was found previously, fall back to end screen renderer
   if related.empty?
     # Container for "endScreenVideoRenderer" items
-    end_screen_watch_next_array = player_overlays.try &.dig?(
-      "endScreen", "watchNextEndScreenRenderer", "results"
-    )
-
     player_overlays.try &.as_a.each do |element|
       if item = element["endScreenVideoRenderer"]?
         related_video = parse_related_video(item)