[XFS] Use uninitialized_var macro to stop warning about rtx

Appease gcc in regards to "warning: 'rtx' is used uninitialized in
this function".

SGI-PV: 907752
SGI-Modid: xfs-linux-melb:xfs-kern:29007a

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 183add2f21b7..09d86388bb71 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -2605,7 +2605,6 @@ xfs_bmap_rtalloc(
         xfs_extlen_t    prod = 0;       /* product factor for allocators */
         xfs_extlen_t    ralen = 0;      /* realtime allocation length */
         xfs_extlen_t    align;          /* minimum allocation alignment */
-        xfs_rtblock_t   rtx;            /* realtime extent number */
         xfs_rtblock_t   rtb;
 
         mp = ap->ip->i_mount;
@@ -2643,6 +2642,8 @@ xfs_bmap_rtalloc(
          * pick an extent that will space things out in the rt area.
          */
         if (ap->eof && ap->off == 0) {
+                xfs_rtblock_t uninitialized_var(rtx); /* realtime extent no */
+
                 error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx);
                 if (error)
                         return error;