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/nfs_xdr.h b/libc/kernel/common/linux/nfs_xdr.h
index 865e178..4ddecd7 100644
--- a/libc/kernel/common/linux/nfs_xdr.h
+++ b/libc/kernel/common/linux/nfs_xdr.h
@@ -68,12 +68,12 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long time_start;
 };
-#define NFS_ATTR_WCC 0x0001  
-#define NFS_ATTR_FATTR 0x0002  
+#define NFS_ATTR_WCC 0x0001
+#define NFS_ATTR_FATTR 0x0002
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define NFS_ATTR_FATTR_V3 0x0004  
-#define NFS_ATTR_FATTR_V4 0x0008  
-#define NFS_ATTR_FATTR_V4_REFERRAL 0x0010  
+#define NFS_ATTR_FATTR_V3 0x0004
+#define NFS_ATTR_FATTR_V4 0x0008
+#define NFS_ATTR_FATTR_V4_REFERRAL 0x0010
 struct nfs_fsinfo {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct nfs_fattr *fattr;