Resolve [-Wshadow]

Source/Core/VideoCommon/TextureCacheBase.cpp

@@ -656,8 +656,8 @@ void TextureCacheBase::DoSaveState(PointerWrap& p)
   }
 
   auto doList = [&p](auto list) {
-    u32 size = static_cast<u32>(list.size());
-    p.Do(size);
+    u32 list_size = static_cast<u32>(list.size());
+    p.Do(list_size);
     for (const auto& it : list)
     {
       p.Do(it.first);