Fix coding style

It was about damn time. Consistency is very important in such a
big codebase.

sleep.c

@@ -1,6 +1,7 @@
 /* See LICENSE file for copyright and license details. */
 #include <stdlib.h>
 #include <unistd.h>
+
 #include "util.h"
 
 static void
@@ -19,11 +20,11 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND;
 
-	if(argc < 1)
+	if (argc < 1)
 		usage();
 
 	seconds = estrtol(argv[0], 0);
-	while((seconds = sleep(seconds)) > 0)
+	while ((seconds = sleep(seconds)) > 0)
 		;
 	return 0;
 }