Fixup: as(): refactor of as() for std::variant

Author: filipsajdak

include/cpp2util.h

@@ -2047,7 +2047,7 @@ auto as(auto&& x CPP2_SOURCE_LOCATION_PARAM_WITH_DEFAULT_AS) -> decltype(auto)
             return false;
         });
         if (!ptr) { Throw( std::bad_variant_access(), "'as' cast failed for 'variant'"); }
-        return forward_like<decltype(x)>(*ptr);
+        return cpp2::forward_like<decltype(x)>(*ptr);
     }
     else {
         return nonesuch;