fs/befs/io.c:befs_bread_iaddr(): remove unneeded initialization to NULL

bh is reinitialized by sb_bread() so no need to init it
with NULL in the beginning of befs_bread_iaddr()

Link: http://lkml.kernel.org/r/586d2639d729345b9c07aac10ba713d8ceb8745a.1462841692.git.salah.triki@acm.org
Signed-off-by: Salah Triki <salah.triki@acm.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/befs/io.c

@@ -26,7 +26,7 @@
 struct buffer_head *
 befs_bread_iaddr(struct super_block *sb, befs_inode_addr iaddr)
 {
-	struct buffer_head *bh = NULL;
+	struct buffer_head *bh;
 	befs_blocknr_t block = 0;
 	struct befs_sb_info *befs_sb = BEFS_SB(sb);