maintenance/tracing: Don't overwrite context in traceLogHandler

maintenance/tracing/tracing.go

@@ -77,19 +77,21 @@ type traceLogHandler struct {
 // Trace the service function handler execution
 func (h *traceLogHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	span := sentry.TransactionFromContext(r.Context())
-	defer span.Finish()
-
-	ctx := span.Context()
 
-	span.SetData("req_id", log.RequestIDFromContext(ctx))
-	span.SetData("path", r.URL.Path)
-	span.SetData("method", r.Method)
+	if span != nil {
+		span.SetData("req_id", log.RequestIDFromContext(r.Context()))
+		span.SetData("path", r.URL.Path)
+		span.SetData("method", r.Method)
+	}
 
 	ww := mutil.WrapWriter(w)
 
-	h.next.ServeHTTP(ww, r.WithContext(ctx))
-	span.SetData("bytes", ww.BytesWritten())
-	span.SetData("status_code", ww.Status())
+	h.next.ServeHTTP(ww, r)
+
+	if span != nil {
+		span.SetData("bytes", ww.BytesWritten())
+		span.SetData("status_code", ww.Status())
+	}
 }
 
 // TraceLogHandler generates a tracing handler that adds logging data to existing handler.