Merge pull request #996 from blakedewey/master

Corrected Freesurfer SegStats

Author: satra

CHANGES

@@ -8,6 +8,8 @@ Next release
 * FIX: Utility interface test dir (https://github.com/nipy/nipype/pull/986)
 * FIX: IPython engine directory reset after crash (https://github.com/nipy/nipype/pull/987)
 * ENH: Resting state fMRI example with NiPy realignment and no SPM (https://github.com/nipy/nipype/pull/992)
+* FIX: Corrected Freesurfer SegStats _list_outputs to avoid error if summary_file is 
+	   undefined (issue #994)(https://https://github.com/nipy/nipype/pull/996)
 
 Release 0.10.0 (October 10, 2014)
 ============

nipype/interfaces/freesurfer/model.py

@@ -635,8 +635,9 @@ class SegStats(FSCommand):
 
     def _list_outputs(self):
         outputs = self.output_spec().get()
-        outputs['summary_file'] = os.path.abspath(self.inputs.summary_file)
-        if not isdefined(outputs['summary_file']):
+        if isdefined(self.inputs.summary_file):
+        	outputs['summary_file'] = os.path.abspath(self.inputs.summary_file)
+        else:
             outputs['summary_file'] = os.path.join(os.getcwd(), 'summary.stats')
         suffices = dict(avgwf_txt_file='_avgwf.txt', avgwf_file='_avgwf.nii.gz',
                         sf_avg_file='sfavg.txt')