core: Fix clang build

Recent changes to the build system that made more warnings be flagged as
errors caused building via clang to break.

Fixes #4795

1 files changed, 3 insertions, 2 deletions

diff --git a/src/audio_core/sink_context.cpp b/src/audio_core/sink_context.cpp
index 0882b411a..3d713814a 100644
--- a/src/audio_core/sink_context.cpp
+++ b/src/audio_core/sink_context.cpp
@@ -23,8 +23,9 @@ bool SinkContext::InUse() const {
 }
 
 std::vector<u8> SinkContext::OutputBuffers() const {
-    std::vector<u8> buffer_ret(use_count);
-    std::memcpy(buffer_ret.data(), buffers.data(), use_count);
+    const auto output_use_count = static_cast<size_t>(use_count);
+    std::vector<u8> buffer_ret(output_use_count);
+    std::memcpy(buffer_ret.data(), buffers.data(), output_use_count);
     return buffer_ret;
 }