fix build on ILP32
Index: tests/test-opt.cpp
--- tests/test-opt.cpp.orig
+++ tests/test-opt.cpp
@@ -98,7 +98,7 @@ static helper_ctx_data helper_get_ctx_data(
struct ggml_context * ctx_compute;
{
struct ggml_init_params params = {
- /*.mem_size =*/ (2*ndata + 2)*ggml_tensor_overhead(),
+ /*.mem_size =*/ static_cast<size_t>((2*ndata + 2)*ggml_tensor_overhead()),
/*.mem_buffer =*/ nullptr,
/*.no_alloc =*/ true,
};