Fix: Uninitialized last intersection type in Cycles

It is unknown to cause any actual problems, but it makes it harder
to read certain debug logs (like the ones from valgrind).

Pull Request: https://projects.blender.org/blender/blender/pulls/132450

intern/cycles/kernel/integrator/path_state.h

@@ -75,6 +75,7 @@ ccl_device_inline void path_state_init_integrator(KernelGlobals kg,
 
   INTEGRATOR_STATE_WRITE(state, isect, object) = OBJECT_NONE;
   INTEGRATOR_STATE_WRITE(state, isect, prim) = PRIM_NONE;
+  INTEGRATOR_STATE_WRITE(state, isect, type) = PRIMITIVE_NONE;
 
   if (kernel_data.kernel_features & KERNEL_FEATURE_VOLUME) {
     INTEGRATOR_STATE_ARRAY_WRITE(state, volume_stack, 0, object) = OBJECT_NONE;