gphoto2: Recognize cameras which don't implement get storageinfo
gphoto2: Recognize cameras which don't implement get storageinfo

Not all gphoto drivers implement get storage info (drivers for proprietary
protocols often don't). This patch fixes the gphoto2volumemonitor to still
recognize cams which gphoto driver does not implement get storage info.

https://bugzilla.gnome.org/show_bug.cgi?id=606059

Signed-off-by: Hans de Goede <9fa1be1a5b5729e4c6b404f34c9ce49ff4882fd8@redhat.com>
Signed-off-by: Tomas Bzatek <d3a1cc6aceb7629c6bc23f72976a8a12cdfc8825@redhat.com>

xkahn/gvfs-cmis,gicmo/gvfs,xkahn/gvfs-cmis,philipl/gvfs,xkahn/gvfs-cmis,halfline/gvfs,cpatulea/gvfs,halfline/gvfs,gicmo/gvfs,philipl/gvfs,gicmo/gvfs,xkahn/gvfs-cmis,halfline/gvfs,cpatulea/gvfs,gicmo/gvfs,philipl/gvfs