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/sysctl.h b/libc/kernel/common/linux/sysctl.h
index 5769259..4e92f5c 100644
--- a/libc/kernel/common/linux/sysctl.h
+++ b/libc/kernel/common/linux/sysctl.h
@@ -24,7 +24,7 @@
 #include <linux/compiler.h>
 struct file;
 struct completion;
-#define CTL_MAXNAME 10  
+#define CTL_MAXNAME 10
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct __sysctl_args {
  int __user *name;