Update CMake sanitizer submodule to current master.

Fixes TSAN on macOS.
2018-09-17 18:09:50 +12:00 · 2018-09-17 18:09:50 +12:00 · 78ae261d00
--- a/cmake/sanitizers-cmake
+++ b/cmake/sanitizers-cmake
@ -1 +1 @@
-Subproject commit f09151bc87ba210f955d58dffc07b0ee1e755234
+Subproject commit aab6948fa863bc1cbe5d0850bc46b9ef02ed4c1a