discover/grub2: Fix word append

The parser was setting word->next on the top-level word, resulting in
word chains of a maximum length of 2. Instead, use a last pointer to
always append to the last word.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/discover/grub2/grub2.h b/discover/grub2/grub2.h
index cbd69dc..970c500 100644
--- a/discover/grub2/grub2.h
+++ b/discover/grub2/grub2.h
@@ -19,6 +19,7 @@ struct grub2_word {
 		} var;
 	};
 	struct grub2_word	*next;
+	struct grub2_word	*last;
 	struct list_item	argv_list;
 };