Clean up trailing whitespace in the kernel headers.

And fix the scripts so they stop letting trailing whitespace through.

Change-Id: Ie109fbe1f63321e565ba0fa60fee8e9cf3a61cfc
diff --git a/libc/kernel/common/linux/if_tun.h b/libc/kernel/common/linux/if_tun.h
index c3ee0c0..3b54833 100644
--- a/libc/kernel/common/linux/if_tun.h
+++ b/libc/kernel/common/linux/if_tun.h
@@ -23,7 +23,7 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/filter.h>
 #define TUN_READQ_SIZE 500
-#define TUN_TUN_DEV 0x0001 
+#define TUN_TUN_DEV 0x0001
 #define TUN_TAP_DEV 0x0002
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TUN_TYPE_MASK 0x000f
@@ -32,13 +32,13 @@
 #define TUN_NO_PI 0x0040
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TUN_ONE_QUEUE 0x0080
-#define TUN_PERSIST 0x0100 
+#define TUN_PERSIST 0x0100
 #define TUN_VNET_HDR 0x0200
-#define TUNSETNOCSUM _IOW('T', 200, int) 
+#define TUNSETNOCSUM _IOW('T', 200, int)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define TUNSETDEBUG _IOW('T', 201, int) 
-#define TUNSETIFF _IOW('T', 202, int) 
-#define TUNSETPERSIST _IOW('T', 203, int) 
+#define TUNSETDEBUG _IOW('T', 201, int)
+#define TUNSETIFF _IOW('T', 202, int)
+#define TUNSETPERSIST _IOW('T', 203, int)
 #define TUNSETOWNER _IOW('T', 204, int)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define TUNSETLINK _IOW('T', 205, int)
@@ -63,12 +63,12 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IFF_VNET_HDR 0x4000
 #define IFF_TUN_EXCL 0x8000
-#define TUN_F_CSUM 0x01  
-#define TUN_F_TSO4 0x02  
+#define TUN_F_CSUM 0x01
+#define TUN_F_TSO4 0x02
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define TUN_F_TSO6 0x04  
-#define TUN_F_TSO_ECN 0x08  
-#define TUN_F_UFO 0x10  
+#define TUN_F_TSO6 0x04
+#define TUN_F_TSO_ECN 0x08
+#define TUN_F_UFO 0x10
 #define TUN_PKT_STRIP 0x0001
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct tun_pi {
@@ -76,7 +76,7 @@
  __be16 proto;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define TUN_FLT_ALLMULTI 0x0001  
+#define TUN_FLT_ALLMULTI 0x0001
 struct tun_filter {
  __u16 flags;
  __u16 count;