lost a reserve() call in last refactoring

1 files changed, 1 insertions, 0 deletions

diff --git a/eval/src/vespa/eval/tensor/serialization/sparse_binary_format.cpp b/eval/src/vespa/eval/tensor/serialization/sparse_binary_format.cpp
index a0b691872a0..f6ceb148a44 100644
--- a/eval/src/vespa/eval/tensor/serialization/sparse_binary_format.cpp
+++ b/eval/src/vespa/eval/tensor/serialization/sparse_binary_format.cpp
@@ -138,6 +138,7 @@ struct BuildSparseCells {
                        size_t cellsSize)
     {
         DirectSparseTensorBuilder<CT> builder(std::move(type));
+        builder.reserve(cellsSize);
         decodeCells<CT>(stream, dimensionsSize, cellsSize, builder);
         return builder.build();
     }