Automatic update of common submodule

From b64f03f to 6f2d209

diff --git a/common b/common
index b64f03f6090245624608beb5d2fff335e23a01c0..6f2d2093e84cc0eb99b634fa281822ebb9507285 160000 (submodule)
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit b64f03f6090245624608beb5d2fff335e23a01c0
+Subproject commit 6f2d2093e84cc0eb99b634fa281822ebb9507285