add type hint

Author: alexander-alderman-webb

sentry_sdk/integrations/stdlib.py

@@ -104,6 +104,7 @@ def putrequest(
             parsed_url = parse_url(real_url, sanitize=False)
 
         span_streaming = has_span_streaming_enabled(client.options)
+        span: "Union[Span, StreamedSpan]"
         if span_streaming:
             span = sentry_sdk.traces.start_span(
                 name="%s %s"