Typo

src/libexpr/eval.cc

@@ -1259,7 +1259,7 @@ void EvalState::callFunction(Value & fun, Value & arg, Value & v, const Pos & po
             addErrorTrace(e, lambda.pos, "while evaluating %s",
               (lambda.name.set()
                   ? "'" + (string) lambda.name + "'"
-                  : "anonymous lambdaction"));
+                  : "anonymous lambda"));
             addErrorTrace(e, pos, "from call site%s", "");
             throw;
         }