address review and add changelog

Author: chrisgorgo

CHANGES

@@ -1,6 +1,7 @@
 Upcoming release (0.14.1)
 ================
 
+* FIX: Robustly handled outputs of 3dFWHMx across different versions of AFNI (https://github.com/nipy/nipype/pull/2373)
 * FIX: Cluster threshold in randomise + change default prefix (https://github.com/nipy/nipype/pull/2369)
 * MAINT: Cleaning / simplify ``Node`` (https://github.com/nipy/nipype/pull/#2325)
 

nipype/interfaces/afni/utils.py

@@ -1318,11 +1318,12 @@ def _list_outputs(self):
 
         # handle newer versions of AFNI
         if sout.size == 8:
-            outputs['fwhm'] = tuple(sout[0,:])
+            outputs['fwhm'] = tuple(sout[0, :])
         else:
             outputs['fwhm'] = tuple(sout)
 
         if self._acf:
+            assert sout.size == 8, "Wrong number of elements in %s"%str(sout)
             outputs['acf_param'] = tuple(sout[1])
 
             outputs['out_acf'] = op.abspath('3dFWHMx.1D')