fixes warnings about potentially uninitialized vars with g++11 (#14366)
fixes warnings about potentially uninitialized vars with g++11 (#14366)


graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,arangodb/arangodb,arangodb/arangodb,graetzer/arangodb,graetzer/arangodb,graetzer/arangodb,wiltonlazary/arangodb,wiltonlazary/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,arangodb/arangodb,graetzer/arangodb,arangodb/arangodb,graetzer/arangodb,wiltonlazary/arangodb,graetzer/arangodb,graetzer/arangodb,graetzer/arangodb,arangodb/arangodb,graetzer/arangodb,arangodb/arangodb,arangodb/arangodb,wiltonlazary/arangodb,wiltonlazary/arangodb,wiltonlazary/arangodb