*: s/xatoi_u/xatoi_positive/g - I got bored of mistyping xatoi_u as xatou_i

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 9107e43..aa17872 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -1147,7 +1147,7 @@
 				continue;
 			}
 
-			val = xatoi_u(opteq);
+			val = xatoi_positive(opteq);
 			switch (idx) {
 			case 0: // "rsize"
 				data.rsize = val;