Testsuite: rtest15 Problem 186 fails



Since some time I get the following fail with the testsuite (GCL 2.6.8 and CLISP
2.44):

Running tests in rtest15: 
********************** Problem 186 ***************
Input:
      !         1     !
limit(!sqrt(1 - -) - 1!, x, 0)
      !         x     !


Result:
       !         1     !
limit  !sqrt(1 - -) - 1!
x -> 0 !         x     !

This differed from the expected result:
und

244/245 tests passed.

Is the noun form the expected result? 

Dieter Kaiser