xfs: fix spacing style issues in xfs_alloc.c

Fix checkpatch.pl errors regarding missing spaces around assignment
operators in xfs_alloc_compute_diff() and xfs_alloc_fixup_trees().

Adhere to the Linux kernel coding style by ensuring spaces are placed
around the assignment operator '='.

Signed-off-by: Shin Seong-jun <shinsj4653@gmail.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

Author: shinsj4653

fs/xfs/libxfs/xfs_alloc.c

@@ -376,8 +376,8 @@ xfs_alloc_compute_diff(
 	xfs_agblock_t	freeend;	/* end of freespace extent */
 	xfs_agblock_t	newbno1;	/* return block number */
 	xfs_agblock_t	newbno2;	/* other new block number */
-	xfs_extlen_t	newlen1=0;	/* length with newbno1 */
-	xfs_extlen_t	newlen2=0;	/* length with newbno2 */
+	xfs_extlen_t	newlen1 = 0;	/* length with newbno1 */
+	xfs_extlen_t	newlen2 = 0;	/* length with newbno2 */
 	xfs_agblock_t	wantend;	/* end of target extent */
 	bool		userdata = datatype & XFS_ALLOC_USERDATA;
 
@@ -577,8 +577,8 @@ xfs_alloc_fixup_trees(
 	int		i;		/* operation results */
 	xfs_agblock_t	nfbno1;		/* first new free startblock */
 	xfs_agblock_t	nfbno2;		/* second new free startblock */
-	xfs_extlen_t	nflen1=0;	/* first new free length */
-	xfs_extlen_t	nflen2=0;	/* second new free length */
+	xfs_extlen_t	nflen1 = 0;	/* first new free length */
+	xfs_extlen_t	nflen2 = 0;	/* second new free length */
 	struct xfs_mount *mp;
 	bool		fixup_longest = false;