4cfbee70bd
_InterlockedExchangeAdd is a Visual Studio intrinsic that's available for all architectures and in all VS versions that we care about. It's also faster than the underscore-less function, since it's an intrinsic. We also don't need to declare it ourselves. It is, however, a Visual Studio-specific intrinsic, so I changed the preprocessing condition accordingly. Fixes <http://code.opencv.org/issues/3365>.