fs: befs: remove in vain variable assignment

There is no need to init res, since it will be overwitten later by
befs_fblock2brun().

Signed-off-by: Salah Triki <salah.triki@gmail.com>
Acked-by: Luis de Bethencourt <luisbg@osg.samsung.com>
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index ebfc9f0..c3909a6 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -120,7 +120,7 @@
 	struct super_block *sb = inode->i_sb;
 	befs_data_stream *ds = &BEFS_I(inode)->i_data.ds;
 	befs_block_run run = BAD_IADDR;
-	int res = 0;
+	int res;
 	ulong disk_off;
 
 	befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld",