reapplied @MarcCote's suggestion.

Soichi Hayashi · Soichi Hayashi · commit bac19880f2e3 · 2019-02-04T00:05:22.000-05:00
diff --git a/nibabel/streamlines/tck.py b/nibabel/streamlines/tck.py
@@ -424,7 +424,7 @@ def _read(cls, fileobj, header, buffer_size=4):
                 for delim in delims:
                     pts = coords[begin:delim]
                     if pts.size:
-                        yield coords[begin:delim]
+                        yield pts
                         n_streams += 1
                     begin = delim + 1
 
