Update src/npctalk.cpp

Author: Maleclypse

src/npctalk.cpp

@@ -3506,7 +3506,7 @@ talk_effect_fun_t::func f_add_trait( const JsonObject &jo, std::string_view memb
             const auto &existing_types = existing->types;
             for( const std::string &t : existing_types ) {
                 bool match = false;
-                if constexpr( std::is_same<decltype( new_types ), const std::set<std::string> &>::value ) {
+                if constexpr( std::is_same<decltype(new_types), const std::set<std::string> &>::value ) {
                     match = new_types.count( t ) > 0;
                 } else {
                     match = std::find( new_types.begin(), new_types.end(), t ) != new_types.end();
@@ -3515,6 +3515,8 @@ talk_effect_fun_t::func f_add_trait( const JsonObject &jo, std::string_view memb
                     guy->unset_mutation( existing );
                     break;
                 }
+            }
+        }
 
         d.actor( is_npc )->set_mutation( trait, variant );
     };