Hide errors during loading of efivars module

If efivars can't be loaded then EFI support isn't present,
but don't display the error message of the module loading
to the user.

diff --git a/grml-debootstrap b/grml-debootstrap
index 9a67754..13d6536 100755 (executable)
--- a/grml-debootstrap
+++ b/grml-debootstrap
@@ -794,7 +794,7 @@ efi_support() {
     return 0
   fi
 
-  if modprobe efivars ; then
+  if modprobe efivars &>/dev/null ; then
     einfo "EFI support enabled now." ; eend 0
     return 0
   fi