fix: outputspec

Author: mgxd

nipype/interfaces/freesurfer/preprocess.py

@@ -1468,7 +1468,7 @@ class MNIBiasCorrectionInputSpec(FSTraitedSpec):
     in_file = File(exists=True, mandatory=True, argstr="--i %s",
                    desc="input volume. Input can be any format accepted by mri_convert.")
     # optional
-    out_file = File(argstr="--o %s", name_source=['in_file'], genfile=True,
+    out_file = File(argstr="--o %s", name_source=['in_file'],
                     name_template='%s_output', hash_files=False, keep_extension=True,
                     desc="output volume. Output can be any format accepted by mri_convert. " +
                     "If the output format is COR, then the directory must exist.")
@@ -1528,7 +1528,7 @@ class MNIBiasCorrection(FSCommand):
     output_spec = MNIBiasCorrectionOutputSpec
 
     def _list_outputs(self):
-        outputs = self._outputs().get()
+        outputs = self._output_spec().get()
         outputs["out_file"] = os.path.abspath(self.inputs.out_file)
         return outputs