getDirectoryListing can throw a NotFoundException or a RuntimeException.
The repair step should be skipped if the cache directory is missing so
a catch for both exceptions is required.
Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>
Before https://github.com/nextcloud/server/pull/13843 a "photo." file could be created
for unsupported image formats by photocache. Because a file is present but not jpg, png or gif no
photo could be returned for this vcard. These invalid files are removed by this repair step.
Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>
