Fix broken connections in pool

src/invidious/helpers/utils.cr

@@ -1595,7 +1595,9 @@ struct HTTPPool
   end
 
   def client(region = nil, &block)
-    pool.connection do |conn|
+    conn = pool.checkout
+
+    begin
       if region
         PROXY_LIST[region]?.try &.sample(40).each do |proxy|
           begin
@@ -1607,17 +1609,17 @@ struct HTTPPool
         end
       end
 
-      begin
-        response = yield conn
-        conn.unset_proxy
-        response
-      rescue ex
-        conn = HTTPClient.new(url)
-        conn.family = (url.host == "www.youtube.com") ? CONFIG.force_resolve : Socket::Family::UNSPEC
-        conn.read_timeout = 5.seconds
-        conn.connect_timeout = 5.seconds
-        yield conn
-      end
+      response = yield conn
+      conn.unset_proxy
+      response
+    rescue ex
+      conn = HTTPClient.new(url)
+      conn.family = (url.host == "www.youtube.com") ? CONFIG.force_resolve : Socket::Family::UNSPEC
+      conn.read_timeout = 5.seconds
+      conn.connect_timeout = 5.seconds
+      yield conn
+    ensure
+      pool.checkin(conn)
     end
   end