Address minor inconsistencies

Author: SergioRAgostinho

filters/include/pcl/filters/impl/normal_space.hpp

@@ -60,8 +60,8 @@ pcl::NormalSpaceSampling<PointT, NormalT>::initCompute ()
   }
 
   rng_uniform_distribution_ = std::bind (
-    boost::uniform_int<unsigned int> (0, unsigned (input_->size ())),
-    boost::mt19937 (static_cast<unsigned int> (seed_))
+    boost::uniform_int<std::uint32_t> (0, static_cast<std::uint32_t> (input_->size ())),
+    boost::mt19937 (seed_)
   );
   return (true);
 }