ocfs2: Fix compilation warning for fs/ocfs2/xattr.c

gcc 4.4.1 generates the following build warning on i386:

CC [M]  fs/ocfs2/xattr.o
fs/ocfs2/xattr.c: In function ‘ocfs2_xattr_block_get’:
fs/ocfs2/xattr.c:1055: warning: ‘block_off’ may be used uninitialized in this function

The following fix is based on a similar approach by David Howells
few days back: http://lkml.org/lkml/2009/7/9/109,

Signed-off-by: Subrata Modak<subrata@linux.vnet.ibm.com>,
Signed-off-by: Joel Becker <joel.becker@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index ba320e250747..d1a27cda984f 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -1052,7 +1052,8 @@ static int ocfs2_xattr_block_get(struct inode *inode,
         struct ocfs2_xattr_block *xb;
         struct ocfs2_xattr_value_root *xv;
         size_t size;
-        int ret = -ENODATA, name_offset, name_len, block_off, i;
+        int ret = -ENODATA, name_offset, name_len, i;
+        int uninitialized_var(block_off);
 
         xs->bucket = ocfs2_xattr_bucket_new(inode);
         if (!xs->bucket) {