Fixed warnings. (#3830)

src/renderer_d3d12.cpp

@@ -747,9 +747,9 @@ namespace bgfx { namespace d3d12
 			, m_winPixEvent(NULL)
 			, m_featureLevel(D3D_FEATURE_LEVEL(0) )
 			, m_swapChain(NULL)
-			, m_backBufferDepthStencil(NULL)
 			, m_currentColor(NULL)
 			, m_currentDepthStencil(NULL)
+			, m_backBufferDepthStencil(NULL)
 			, m_wireframe(false)
 			, m_lost(false)
 			, m_maxAnisotropy(1)

src/renderer_vk.cpp

@@ -4206,7 +4206,7 @@ VK_IMPORT_DEVICE
 			const VkResult result = vkAllocateDescriptorSets(m_device, &dsai, &descriptorSet);
 
 			if (VK_SUCCESS != result
-			&&  m_descriptorPoolIdx + 1 < kMaxDescriptorPoolChunks)
+			&&  uint32_t(m_descriptorPoolIdx + 1) < kMaxDescriptorPoolChunks)
 			{
 				++m_descriptorPoolIdx;