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/zlib.h b/libc/kernel/common/linux/zlib.h
index 0fb085a..5c693f2 100644
--- a/libc/kernel/common/linux/zlib.h
+++ b/libc/kernel/common/linux/zlib.h
@@ -41,13 +41,13 @@
 typedef z_stream *z_streamp;
 #define Z_NO_FLUSH 0
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define Z_PARTIAL_FLUSH 1  
+#define Z_PARTIAL_FLUSH 1
 #define Z_PACKET_FLUSH 2
 #define Z_SYNC_FLUSH 3
 #define Z_FULL_FLUSH 4
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_FINISH 5
-#define Z_BLOCK 6  
+#define Z_BLOCK 6
 #define Z_OK 0
 #define Z_STREAM_END 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */