Automatic update of common submodule

From b497c4f to a72faea

diff --git a/common b/common
index b497c4f0da17535ecf259e68dce46626141cfaee..a72faea054977054ec66e894fd0a07e7d6585d50 160000 (submodule)
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit b497c4f0da17535ecf259e68dce46626141cfaee
+Subproject commit a72faea054977054ec66e894fd0a07e7d6585d50