Update bdwgc

jechter · jechter · commit d90469b9abc8 · 2018-06-01T09:53:57.000+02:00
diff --git a/external/bdwgc b/external/bdwgc
@@ -1 +1 @@
-Subproject commit 8499689b228e94eea44aecd5722578449e0e0b48
+Subproject commit b6af81bd96fd1ef8a29f9efec3ca39a03d37db91
