Rollup merge of #55291 - kazcw:master, r=nikomatsakis

pietroalbini · web-flow · commit b51c2152b148 · 2018-10-23T23:25:19.000+02:00
Update stdsimd submodule Fixes a SSE2 bug. (#55249)
diff --git a/src/stdsimd b/src/stdsimd
@@ -1 +1 @@
-Subproject commit 307650500de5b44dc1047dc9d15e449e09d92b57
+Subproject commit 431766a3fbcfb6dafb2d5a3866c1609bf44ee554
