fix TimeSide HEAD

diff --git a/lib/TimeSide b/lib/TimeSide
index 09c51b347244f6062a94cdde3e9c255ba9840e5d..0aa31ecbfecd58e14c7a62b9447759b2b214423e 160000 (submodule)
--- a/lib/TimeSide
+++ b/lib/TimeSide
@@ -1 +1 @@
-Subproject commit 09c51b347244f6062a94cdde3e9c255ba9840e5d
+Subproject commit 0aa31ecbfecd58e14c7a62b9447759b2b214423e