sysless: update for cmdproc correct return value of cmd_io_as_file_write().

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

diff --git a/submodule/sysless b/submodule/sysless
index e2618e02bbca017134a1b9c1922c4df2b45baa75..1ae56aa43158075b39d64d27df699b7060010381 160000 (submodule)
--- a/submodule/sysless
+++ b/submodule/sysless
@@ -1 +1 @@
-Subproject commit e2618e02bbca017134a1b9c1922c4df2b45baa75
+Subproject commit 1ae56aa43158075b39d64d27df699b7060010381