Btrfs: fix uninit compiler warning in cow_file_range_nocow

The extent_type variable was exposed uninit via a goto.  It should be
impossible to trigger because it is protected by a check on another
variable, but this makes sure.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d960492..ef399a7 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1023,6 +1023,7 @@ next_slot:
 
                if (found_key.offset > cur_offset) {
                        extent_end = found_key.offset;
+                       extent_type = 0;
                        goto out_check;
                }