fix-build-warning

   1 ext4: fix build warning
   2
   3 From: Wu Fengguang <fengguang.wu@intel.com>
   4
   5 Replace `if' with `goto' to assure gcc that ix has been initialized.
   6
   7 Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
   8 ---
   9 diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
  10 index ea2ce3c..885645e 100644
  11 --- a/fs/ext4/extents.c
  12 +++ b/fs/ext4/extents.c
  13 @@ -1160,15 +1160,13 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
  14         while (--depth >= 0) {
  15                 ix = path[depth].p_idx;
  16                 if (ix != EXT_LAST_INDEX(path[depth].p_hdr))
  17 -                       break;
  18 +                       goto got_index;
  19         }
  20
  21 -       if (depth < 0) {
  22 -               /* we've gone up to the root and
  23 -                * found no index to the right */
  24 -               return 0;
  25 -       }
  26 +       /* we've gone up to the root and found no index to the right */
  27 +       return 0;
  28
  29 +got_index:
  30         /* we've found index to the right, let's
  31          * follow it and find the closest allocated
  32          * block to the right */
  33 @@ -1201,7 +1200,6 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
  34         *phys = ext_pblock(ex);
  35         put_bh(bh);
  36         return 0;
  37 -
  38  }
  39
  40  /*