Fix http module?

Author: Luca Forstner

packages/node/src/integrations/http.ts

@@ -277,8 +277,8 @@ function _createWrappedRequestMethodFactory(
           ...scope.getPropagationContext(),
         };
 
-        const sentryTraceHeader = requestSpan
-          ? spanToTraceHeader(requestSpan)
+        const sentryTraceHeader = transaction
+          ? spanToTraceHeader(transaction)
           : generateSentryTraceHeader(traceId, spanId, sampled);
 
         const sentryBaggageHeader = dynamicSamplingContextToSentryBaggageHeader(