Update README file and makes some cange in function ext4_find_leaf

1 files changed, 4 insertions, 2 deletions

diff --git a/extlinux.c b/extlinux.c
index ce494f3..e752fe5 100644
--- a/extlinux.c
+++ b/extlinux.c
@@ -349,14 +349,16 @@ ext4_find_leaf (struct ext4_extent_header *eh, __u32 block)
 
         while (1) {
 
-                index = EXT4_FIRST_INDEX(eh);
-        
                 if (eh->eh_magic != EXT4_EXT_MAGIC)
                         return NULL;
 
+                /* got it */
                 if (eh->eh_depth == 0)
                         return eh;
 
+                index = EXT4_FIRST_INDEX(eh);        
+
+
                 for ( i = 0; i < eh->eh_entries; i++ ) {
                         if ( block < index[i].ei_block )
                                 break;