fs/exofs: only use true/false for asignment of bool type variable

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/exofs/super.c

@@ -118,7 +118,7 @@ static int parse_options(char *options, struct exofs_mountopt *opts)
 					  EXOFS_MIN_PID);
 				return -EINVAL;
 			}
-			s_pid = 1;
+			s_pid = true;
 			break;
 		case Opt_to:
 			if (match_int(&args[0], &option))