Fix virtual overriding

src/BC1/BC1Decoder.cpp

@@ -23,7 +23,7 @@
 #include "../blocks.h"
 
 namespace rgbcx {
-void BC1Decoder::DecodeBlock(Color4x4 dest, BC1Block *const block) const {
+void BC1Decoder::DecodeBlock(Color4x4 dest, BC1Block *const block) const noexcept(ndebug) {
     const auto l = block->GetLowColor();
     const auto h = block->GetHighColor();
     const auto selectors = block->UnpackSelectors();

src/BlockDecoder.h

@@ -26,6 +26,7 @@
 
 #include "ColorBlock.h"
 #include "util.h"
+#include "ndebug.h"
 
 namespace rgbcx {
 
@@ -36,7 +37,7 @@ template <class B, size_t M, size_t N> class BlockDecoder {
 
     BlockDecoder() noexcept = default;
     virtual ~BlockDecoder() noexcept = default;
-    virtual void DecodeBlock(DecodedBlock dest, EncodedBlock *const block) const = 0;
+    virtual void DecodeBlock(DecodedBlock dest, EncodedBlock *const block) const noexcept(ndebug) = 0;
 
     void DecodeRow(std::span<DecodedBlock> dests, std::span<const EncodedBlock> blocks) {
         assert(dests.size() == blocks.size());