fix return value when reboot id cannot be retrieved (#9857)
fix return value when reboot id cannot be retrieved (#9857)


arangodb/arangodb,Simran-B/arangodb,arangodb/arangodb,wiltonlazary/arangodb,Simran-B/arangodb,arangodb/arangodb,wiltonlazary/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb,fceller/arangodb,fceller/arangodb,fceller/arangodb,fceller/arangodb,graetzer/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,Simran-B/arangodb,wiltonlazary/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,fceller/arangodb,Simran-B/arangodb,arangodb/arangodb,arangodb/arangodb,graetzer/arangodb,Simran-B/arangodb,Simran-B/arangodb,fceller/arangodb,graetzer/arangodb,fceller/arangodb,arangodb/arangodb,graetzer/arangodb,Simran-B/arangodb,arangodb/arangodb,graetzer/arangodb,Simran-B/arangodb,arangodb/arangodb,Simran-B/arangodb,graetzer/arangodb,fceller/arangodb,graetzer/arangodb,fceller/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,fceller/arangodb,wiltonlazary/arangodb