xfs: eliminate some newly-reported gcc warnings

Ionut Gabriel Popescu <poyo_vl@yahoo.com> submitted a simple change
to eliminate some "may be used uninitialized" warnings when building
XFS.  The reported condition seems to be something that GCC did not
used to recognize or report.  The warnings were produced by:

    gcc version 4.5.0 20100604
    [gcc-4_5-branch revision 160292] (SUSE Linux)

Signed-off-by: Ionut Gabriel Popescu <poyo_vl@yahoo.com>
Signed-off-by: Alex Elder <aelder@sgi.com>

diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index af168fa..112abc4 100644 (file)
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -675,7 +675,7 @@ xfs_alloc_ag_vextent_near(
        xfs_agblock_t   gtbnoa;         /* aligned ... */
        xfs_extlen_t    gtdiff;         /* difference to right side entry */
        xfs_extlen_t    gtlen;          /* length of right side entry */
-       xfs_extlen_t    gtlena;         /* aligned ... */
+       xfs_extlen_t    gtlena = 0;     /* aligned ... */
        xfs_agblock_t   gtnew;          /* useful start bno of right side */
        int             error;          /* error code */
        int             i;              /* result code, temporary */
@@ -684,7 +684,7 @@ xfs_alloc_ag_vextent_near(
        xfs_agblock_t   ltbnoa;         /* aligned ... */
        xfs_extlen_t    ltdiff;         /* difference to left side entry */
        xfs_extlen_t    ltlen;          /* length of left side entry */
-       xfs_extlen_t    ltlena;         /* aligned ... */
+       xfs_extlen_t    ltlena = 0;     /* aligned ... */
        xfs_agblock_t   ltnew;          /* useful start bno of left side */
        xfs_extlen_t    rlen;           /* length of returned extent */
 #if defined(DEBUG) && defined(__KERNEL__)