Typo

Author: antonpirker

sentry_sdk/integrations/asgi.py

@@ -149,7 +149,7 @@ async def _run_app(self, scope, callback):
                         transaction = Transaction(op="asgi.server")
 
                     transaction.name = _DEFAULT_TRANSACTION_NAME
-                    transaction.source + TRANSACTION_SOURCE_UNKNOWN
+                    transaction.source = TRANSACTION_SOURCE_UNKNOWN
                     transaction.set_tag("asgi.type", ty)
 
                     with hub.start_transaction(