Fix undefined behavior: do not reference an out-of-scope variable

src/dxvk/rtx_render/rtx_nrd_context.cpp

@@ -683,6 +683,7 @@ namespace dxvk {
         // Static sampler descriptors
         std::vector<VkDescriptorImageInfo> samplerDescs;
         samplerDescs.resize(denoiserDesc.samplersNum);
+        // DUMMY
         for (size_t i = 0; i < denoiserDesc.samplersNum; i++) {
 
           const VkDescriptorSetLayoutBinding& binding = computePipeline.bindings[i];