befs: fix style issues in io.c

Fixing the two following checkpatch.pl issues:
ERROR: trailing whitespace
+ * Based on portions of file.c and inode.c $

WARNING: labels should not be indented
+      error:
Signed-off-by: NLuis de Bethencourt <luisbg@osg.samsung.com>

fs/befs/io.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2001 Will Dyson <will_dyson@pobox.com
  *
- * Based on portions of file.c and inode.c 
+ * Based on portions of file.c and inode.c
  * by Makoto Kato (m_kato@ga2.so-net.ne.jp)
  *
  * Many thanks to Dominic Giampaolo, author of Practical File System
@@ -55,7 +55,7 @@ befs_bread_iaddr(struct super_block *sb, befs_inode_addr iaddr)
 	befs_debug(sb, "<--- %s", __func__);
 	return bh;
 
-      error:
+error:
 	befs_debug(sb, "<--- %s ERROR", __func__);
 	return NULL;
 }