Avoid undefined behavior (and crashing) within svn_fs_fs__get_changes when there is no changes cache. Caches in fs_fs_data_t are optional by design: [[[ /* Private (non-shared) FSFS-specific data for each svn_fs_t object. Any caches in here may be NULL. */ ]]] Follow-up to r1512904. * subversion/libsvn_fs_fs/cached_data.c (svn_fs_fs__get_changes): Avoid possible uninitialized variable access by setting FOUND to FALSE in case we do not have a CHANGES_CACHE. Patch by: Evgeny Kotkov