Fix initramfs hooks on Debian Jessie
(cherry picked from commit 1dab477659e78c3118051c37840e3473e6403ce3)

diff --git a/usr/share/initramfs-tools/hooks/cryptlukssc b/usr/share/initramfs-tools/hooks/cryptlukssc
index 092d2e9..577fc96 100755
--- a/usr/share/initramfs-tools/hooks/cryptlukssc
+++ b/usr/share/initramfs-tools/hooks/cryptlukssc
@@ -45,7 +45,8 @@
 if [ -e /usr/lib/*`uname -i`*/libusb-1.0.so.0 ]
 then
   copy_exec /usr/lib/*`uname -i`*/libusb-1.0.so.0 /usr/lib
-else
+else if [ -e /usr/lib/libusb-1.0.so.0 ]
+then
   copy_exec /usr/lib/libusb-1.0.so.0 /usr/lib
 fi
 cp -r /usr/lib/pcsc ${DESTDIR}/usr/lib