debug/assert: add a more descriptive version of WARN_RETURN

debug/assert.hpp

@@ -108,6 +108,9 @@ constexpr bool debug_enabled = false;
 } while (0)
 
 
+#define WARN_AND_RETURN_IF(COND, VALUE) WARN_RETURN((COND), (VALUE))
+
+
 #define RETURN_UNLESS(VALUE,CONDITION) do {                             \
     if (const auto &__return_unless = (CONDITION); !__return_unless) {  \
         if constexpr (debug_enabled) {                                  \