FIX: Typos

Author: effigies

nipype/algorithms/confounds.py

@@ -422,10 +422,10 @@ def _run_interface(self, runtime):
                 # Derive TR from NIfTI header, if possible
                 try:
                     TR = imgseries.header.get_zooms()[3]
-                    if self.inputs.get_xyzt_units()[1] == 'msec':
+                    if imgseries.get_xyzt_units()[1] == 'msec':
                         TR /= 1000
-                except AttributeError, IndexError:
-                    pass
+                except (AttributeError, IndexError):
+                    TR = 0
 
                 if TR == 0:
                     raise ValueError(