Btrfs: Fix checkpatch.pl warnings

There were many, most are fixed now.  struct-funcs.c generates some warnings
but these are bogus.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/struct-funcs.c b/fs/btrfs/struct-funcs.c
index 8d7f568..c0f7eca 100644
--- a/fs/btrfs/struct-funcs.c
+++ b/fs/btrfs/struct-funcs.c
@@ -66,7 +66,7 @@
 		unsigned long map_len;					\
 		u##bits res;						\
 		err = map_extent_buffer(eb, offset,			\
-			        sizeof(((type *)0)->member),		\
+				sizeof(((type *)0)->member),		\
 				&map_token, &kaddr,			\
 				&map_start, &map_len, KM_USER1);	\
 		if (err) {						\
@@ -103,7 +103,7 @@
 		unsigned long map_start;				\
 		unsigned long map_len;					\
 		err = map_extent_buffer(eb, offset,			\
-			        sizeof(((type *)0)->member),		\
+				sizeof(((type *)0)->member),		\
 				&map_token, &kaddr,			\
 				&map_start, &map_len, KM_USER1);	\
 		if (err) {						\