update miri

RalfJung · RalfJung · commit e6c8e9dc7989 · 2018-12-03T13:02:02.000+01:00
diff --git a/src/tools/miri b/src/tools/miri
@@ -1 +1 @@
-Subproject commit 8d2bc97d7c3927cc8cb53afeaf97bd832be2b7c2
+Subproject commit 61f20761d3124f5a1b1caee8aa15637cc7f92d8e
