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/socket.h b/libc/kernel/common/linux/socket.h
index 1037f50..d1cbaf4 100644
--- a/libc/kernel/common/linux/socket.h
+++ b/libc/kernel/common/linux/socket.h
@@ -18,7 +18,7 @@
  ****************************************************************************/
 #ifndef _LINUX_SOCKET_H
 #define _LINUX_SOCKET_H
-#define _K_SS_MAXSIZE 128  
+#define _K_SS_MAXSIZE 128
 #define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef unsigned short __kernel_sa_family_t;