message: Fix cmake mis-matching arguments warning
diff: @@ -300,7 +300,7 @@ if(CAF_ENABLE_ADDRESS_SANITIZER AND NOT WIN32)
  endif()
  # restore CXX flags
  set(CMAKE_CXX_FLAGS "${CXXFLAGS_BACKUP}")
  -endif(CAF_ENABLE_ADDRESS_SANITIZER)
  +endif()
  # -pthread is ignored on MacOSX but required on other platforms
  if(NOT APPLE AND NOT WIN32)
  build_string("EXTRA_FLAGS" "-pthread")
  