BF: Try copying array shape

Suggested by @matthew-brett

Author: effigies

nibabel/parrec.py

@@ -609,7 +609,7 @@ def __getitem__(self, slicer):
                                  'F')
         # Broadcast scaling to shape of original data
         slopes, inters = self._slice_scaling
-        fake_data = np.zeros(self._shape)
+        fake_data = strided_scalar(self._shape.copy())
         _, slopes, inters = np.broadcast_arrays(fake_data, slopes, inters)
         # Slice scaling to give output shape
         return raw_data * slopes[slicer] + inters[slicer]