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/udp.h b/libc/kernel/common/linux/udp.h
index 53a78c4..10d6658 100644
--- a/libc/kernel/common/linux/udp.h
+++ b/libc/kernel/common/linux/udp.h
@@ -27,9 +27,9 @@
  __u16 check;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-#define UDP_CORK 1  
-#define UDP_ENCAP 100  
-#define UDP_ENCAP_ESPINUDP_NON_IKE 1  
+#define UDP_CORK 1
+#define UDP_ENCAP 100
+#define UDP_ENCAP_ESPINUDP_NON_IKE 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define UDP_ENCAP_ESPINUDP 2  
+#define UDP_ENCAP_ESPINUDP 2
 #endif