improve readability of stdio: fix indentation and remove trailing spaces

Change-Id: Ic51e58a7c75d20bf770dc0ebd7f97a338fbe0036
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
diff --git a/libc/stdio/fprintf.c b/libc/stdio/fprintf.c
index 809d8db..7415b2f 100644
--- a/libc/stdio/fprintf.c
+++ b/libc/stdio/fprintf.c
@@ -38,10 +38,10 @@
 fprintf(FILE *fp, const char *fmt, ...)
 {
 	int ret;
-  va_list ap;
+	va_list ap;
 
 	va_start(ap, fmt);
 	ret = vfprintf(fp, fmt, ap);
-  va_end(ap);
+	va_end(ap);
 	return (ret);
 }