Run urlcleanup() before running urlopen()

classes/handler.py

@@ -1,5 +1,5 @@
 from http.server import BaseHTTPRequestHandler
-from urllib.request import urlopen
+from urllib.request import urlopen, urlcleanup
 from urllib.error import URLError
 from socket import error, timeout
 from io import BytesIO
@@ -17,6 +17,7 @@ class ImageHandler(BaseHTTPRequestHandler):
     def get_next_image(self):
         try:
             bfr = BytesIO()
+            urlcleanup()
             src = urlopen(self.source_image).read()
             bfr.write(src)
             bfr.seek(0)