fixed dynamic cast issue on mac

9 jobs from property_map_hfh_int_support in 4 minutes and 2 seconds
Status Job ID Name Coverage
  Test
passed #38354
VS2013
VS2013-32-bit

00:00:55

passed #38353
VS2013
VS2013-64-bit

00:00:54

passed #38352
VS2015
VS2015-32-bit

00:01:23

passed #38351
VS2015
VS2015-64-bit

00:01:08

passed #38348
Linux
clang-c++11

00:02:21

passed #38350
Linux
cppcheck

00:00:42

passed #38355
Linux
doc

00:00:21

passed #38347
Linux
gcc-c++11

00:04:01

passed #38349
Apple
macos-c++11

00:01:43