Fix potential race condition as ListenAndServe can be exec in goroutine
Fix potential race condition as ListenAndServe can be exec in goroutine

safchain/skydive,safchain/skydive,lebauce/skydive,safchain/skydive,fdebonneval/skydive,skydive-project/skydive,lebauce/skydive,skydive-project/skydive,redhat-cip/skydive,skydive-project/skydive,safchain/skydive,lebauce/skydive,fdebonneval/skydive,redhat-cip/skydive,fdebonneval/skydive,skydive-project/skydive,safchain/skydive,safchain/skydive,skydive-project/skydive,skydive-project/skydive,lebauce/skydive,lebauce/skydive,lebauce/skydive,skydive-project/skydive,lebauce/skydive,lebauce/skydive,redhat-cip/skydive,safchain/skydive,safchain/skydive