Add fix for streams

src/invidious.cr

@@ -186,8 +186,10 @@ get "/watch" do |env|
 
   fmt_stream = [] of HTTP::Params
   video.info["url_encoded_fmt_stream_map"].split(",") do |string|
+    if !string.empty?
     fmt_stream << HTTP::Params.parse(string)
   end
+  end
 
   adaptive_fmts = [] of HTTP::Params
   if video.info.has_key?("adaptive_fmts")