Cache font family lookups that fail to obtain a font collection (#10109)

f742514a · Jason Simmons · GitHub · 7c177724 · f742514a
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third_party/txt/src/txt/font_collection.cc third_party/txt/src/txt/font_collection.cc +1 -0

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--- a/third_party/txt/src/txt/font_collection.cc
+++ b/third_party/txt/src/txt/font_collection.cc
@@ -159,6 +159,7 @@ FontCollection::GetMinikinFontCollectionForFamilies(
  }
  // Default font family also not found. We fail to get a FontCollection.
  if (minikin_families.empty()) {
+    font_collections_cache_[family_key] = nullptr;
    return nullptr;
  }
  if (enable_font_fallback_) {