video_core: renderer_vulkan: vk_query_cache: Avoid shutdown crash in QueryPool::Reserve.

src/video_core/renderer_vulkan/vk_query_cache.cpp

@@ -59,10 +59,11 @@ void QueryPool::Reserve(std::pair<VkQueryPool, u32> query) {
         std::find_if(pools.begin(), pools.end(), [query_pool = query.first](vk::QueryPool& pool) {
             return query_pool == *pool;
         });
-    ASSERT(it != std::end(pools));
 
+    if (it != std::end(pools)) {
         const std::ptrdiff_t pool_index = std::distance(std::begin(pools), it);
         usage[pool_index * GROW_STEP + static_cast<std::ptrdiff_t>(query.second)] = false;
+    }
 }
 
 QueryCache::QueryCache(VideoCore::RasterizerInterface& rasterizer_, const Device& device_,