common: Make use of [[nodiscard]] where applicable

Now that clang-format makes [[nodiscard]] attributes format sensibly, we
can apply them to several functions within the common library to allow
the compiler to complain about any misuses of the functions.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/common/ring_buffer.h b/src/common/ring_buffer.h
index abe3b4dc2..138fa0131 100644
--- a/src/common/ring_buffer.h
+++ b/src/common/ring_buffer.h
@@ -91,12 +91,12 @@ public:
     }
 
     /// @returns Number of slots used
-    std::size_t Size() const {
+    [[nodiscard]] std::size_t Size() const {
         return m_write_index.load() - m_read_index.load();
     }
 
     /// @returns Maximum size of ring buffer
-    constexpr std::size_t Capacity() const {
+    [[nodiscard]] constexpr std::size_t Capacity() const {
         return capacity;
     }