Minor, tweak spaces

src/hb-unicode.h

diff --git a/src/hb-unicode.h b/src/hb-unicode.h
index df0b91f..61b1b0b 100644
--- a/src/hb-unicode.h
+++ b/src/hb-unicode.h
@@ -200,15 +200,15 @@
 
 HB_EXTERN hb_bool_t
 hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs,
-			        hb_user_data_key_t *key,
-			        void *              data,
-			        hb_destroy_func_t   destroy,
+				hb_user_data_key_t *key,
+				void *              data,
+				hb_destroy_func_t   destroy,
 				hb_bool_t           replace);
 
 
 HB_EXTERN void *
 hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs,
-			        hb_user_data_key_t *key);
+				hb_user_data_key_t *key);
 
 
 HB_EXTERN void
@@ -260,7 +260,7 @@
  * @user_data:
  * @destroy:
  *
- * 
+ *
  *
  * Since: 0.9.2
  **/
@@ -276,7 +276,7 @@
  * @user_data:
  * @destroy:
  *
- * 
+ *
  *
  * Since: 0.9.2
  **/
@@ -292,7 +292,7 @@
  * @user_data:
  * @destroy:
  *
- * 
+ *
  *
  * Since: 0.9.2
  **/
@@ -308,7 +308,7 @@
  * @user_data:
  * @destroy:
  *
- * 
+ *
  *
  * Since: 0.9.2
  **/
@@ -324,7 +324,7 @@
  * @user_data:
  * @destroy:
  *
- * 
+ *
  *
  * Since: 0.9.2
  **/
@@ -340,7 +340,7 @@
  * @user_data:
  * @destroy:
  *
- * 
+ *
  *
  * Since: 0.9.2
  **/