Add missing nil terminator to argument list of arrayWithObjects.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/steptalk/trunk@38116 72102866-910b-0410-8b05-ffd578937521
Set the return value of the invocation also when the exit pseudo
method of a Smalltalk script object is called.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/steptalk/trunk@38117 72102866-910b-0410-8b05-ffd578937521