forked from amazingfate/loongoffice
...like it was already done in the similar else branch of ReadRelInfoIfNecessary. The call site at GetAllRelationshipsIfAny will translate an m_nRelInfoStatus that remained RELINFO_NOT_INIT into an IOException. Change-Id: I79c601acd23b3b0020c7b4de4c20b0282524bce1
Reading and writing ZIPs.