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/fopen.c b/libc/stdio/fopen.c
index de15dc3..a6cddd3 100644
--- a/libc/stdio/fopen.c
+++ b/libc/stdio/fopen.c
@@ -53,7 +53,7 @@
 	if ((f = open(file, oflags, DEFFILEMODE)) < 0) {
 		fp->_flags = 0;			/* release */
 		return (NULL);
-  }
+	}
 	fp->_file = f;
 	fp->_flags = flags;
 	fp->_cookie = fp;