fix: context loss in Node.js 12.0-12.2

Author: Qard

lib/instrumentation/http-shared.js

@@ -156,6 +156,7 @@ exports.traceOutgoingRequest = function (agent, moduleName, method) {
       return req
 
       function onresponse (res) {
+        ins._recoverTransaction(span.transaction)
         agent.logger.debug('intercepted http.ClientRequest response event %o', { id: id })
         ins.bindEmitter(res)