Don't die during inspection if initrd doesn't exist

This fixes a problem where inspection would die if grub.conf referenced a
non-existent initrd. Just return an empty initrd instead.
(cherry picked from commit 2b43970c8c97f24b1f45c040c6963d30661fa514)

diff --git a/perl/lib/Sys/Guestfs/Lib.pm b/perl/lib/Sys/Guestfs/Lib.pm
index 5428b10..b5b3906 100644 (file)
--- a/perl/lib/Sys/Guestfs/Lib.pm
+++ b/perl/lib/Sys/Guestfs/Lib.pm
@@ -1825,7 +1825,7 @@ sub _inspect_initrd
     # Disregard old-style compressed ext2 files and only work with real
     # compressed cpio files, since cpio takes ages to (fail to) process anything
     # else.
-    if ($g->file ($path) =~ /cpio/) {
+    if ($g->exists($path) && $g->file($path) =~ /cpio/) {
         eval {
             @modules = $g->initrd_list ($path);
         };