message: build: Simplify config=sanitize
  These days OSX clang supports UB sanitizer so we can just use the same
  settings for all systems.
diff: @@ -27,13 +27,8 @@ ifeq ($(config),coverage)
  endif
  ifeq ($(config),sanitize)
  - CXXFLAGS+=-fsanitize=address
  - LDFLAGS+=-fsanitize=address
  -
  - ifneq ($(shell uname),Darwin)
  - CXXFLAGS+=-fsanitize=undefined
  - LDFLAGS+=-fsanitize=undefined
  - endif
  + CXXFLAGS+=-fsanitize=address,undefined
  + LDFLAGS+=-fsanitize=address,undefined
  endif
  ifeq ($(config),analyze)
  