btrfs: change return type from int to bool in check_eb_range()

The function always returns true or false but the its return type is
defined as int, which makes no sense. Change it to bool.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

Author: fdmanana

fs/btrfs/extent_io.c

@@ -3994,8 +3994,8 @@ static bool report_eb_range(const struct extent_buffer *eb, unsigned long start,
  *
  * Caller should not touch the dst/src memory if this function returns error.
  */
-static inline int check_eb_range(const struct extent_buffer *eb,
-				 unsigned long start, unsigned long len)
+static inline bool check_eb_range(const struct extent_buffer *eb,
+				  unsigned long start, unsigned long len)
 {
 	unsigned long offset;