include utility because of std::exchange

fpelliccioni · fpelliccioni · commit c28466c08bb7 · 2022-09-22T22:57:07.000+02:00
diff --git a/include/cpp2util.h b/include/cpp2util.h
@@ -190,6 +190,7 @@
     #include <any>
     #include <optional>
     #include <cstddef>
+    #include <utility>
 
     #if defined(CPP2_USE_SOURCE_LOCATION)
         #include <source_location>
