K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2017-08-08T20:44:16.929579Z
K 7
svn:log
V 509
Fail to open efirt device when no EFI on system.

libefivar expects opening /dev/efi to indicate if the we can make efi
runtime calls. With a null routine, it was always succeeding leading
efi_variables_supported() to return the wrong value. Only succeed if
we have an efi_runtime table. Also, while I'm hear, out of an
abundance of caution, add a likely redundant check to make sure
efi_systbl is not NULL before dereferencing it. I know it can't be
NULL if efi_cfgtbl is non-NULL, but the compiler doesn't.

END