[patch] ext4: remove an unneeded NULL check

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We dereference "bh" unconditionally a couple lines down to find
"by->b_size".  This function is never called with a NULL "bh" so I have
removed the check.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 164c560..a4a0234 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -91,17 +91,17 @@ int __ext4_check_dir_entry(const char *function, unsigned int line,
 		return 0;
 
 	if (filp)
-		ext4_error_file(filp, function, line, bh ? bh->b_blocknr : 0,
+		ext4_error_file(filp, function, line, bh->b_blocknr,
 				"bad entry in directory: %s - offset=%u(%u), "
 				"inode=%u, rec_len=%d, name_len=%d",
-				error_msg, (unsigned) (offset%bh->b_size),
+				error_msg, (unsigned) (offset % bh->b_size),
 				offset, le32_to_cpu(de->inode),
 				rlen, de->name_len);
 	else
-		ext4_error_inode(dir, function, line, bh ? bh->b_blocknr : 0,
+		ext4_error_inode(dir, function, line, bh->b_blocknr,
 				"bad entry in directory: %s - offset=%u(%u), "
 				"inode=%u, rec_len=%d, name_len=%d",
-				error_msg, (unsigned) (offset%bh->b_size),
+				error_msg, (unsigned) (offset % bh->b_size),
 				offset, le32_to_cpu(de->inode),
 				rlen, de->name_len);
 
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