Cycles: modernize usage of rna iterators

Using rna iterators in range-based for loops is possible since {rBc4286ddb095d32714c9d5f10751a14f5871b3844}.

This patch only updates the places that are easy to update
without more changes in surrounding code.

Differential Revision: https://developer.blender.org/D10195

1 files changed, 2 insertions, 3 deletions

diff --git a/intern/cycles/blender/blender_geometry.cpp b/intern/cycles/blender/blender_geometry.cpp
index 53557e0fe38..a009018f357 100644
--- a/intern/cycles/blender/blender_geometry.cpp
+++ b/intern/cycles/blender/blender_geometry.cpp
@@ -50,13 +50,12 @@ array<Node *> BlenderSync::find_used_shaders(BL::Object &b_ob)
 
   array<Node *> used_shaders;
 
-  BL::Object::material_slots_iterator slot;
-  for (b_ob.material_slots.begin(slot); slot != b_ob.material_slots.end(); ++slot) {
+  for (BL::MaterialSlot &b_slot : b_ob.material_slots) {
     if (material_override) {
       find_shader(material_override, used_shaders, default_shader);
     }
     else {
-      BL::ID b_material(slot->material());
+      BL::ID b_material(b_slot.material());
       find_shader(b_material, used_shaders, default_shader);
     }
   }