Samples on vulkan.hpp: 09_InitDescriptorSet.cpp, 10_InitRenderPass. (#211)

+ add some missing exit code to some samples.

samples/08_InitPipelineLayout/08_InitPipelineLayout.cpp

@@ -66,6 +66,7 @@ int main(int argc, char *argv[])
   catch (std::runtime_error err)
   {
     std::cout << "std::runtime_error: " << err.what() << std::endl;
+    exit(-1);
   }
   catch (...)
   {