Fixed if ImageWrapper.__init__ crashes, ImageWrapper.__del__ complains

because __taskThread attr does not exist.

fsl/data/image.py

@@ -322,7 +322,7 @@ class Image(Nifti1, notifier.Notifier):
     as properties (https://docs.python.org/2/library/functions.html#property):
 
 
-    ============== ======================================================
+    ============== ===========================================================
     ``name``       The name of this ``Image`` - defaults to the image
                    file name, sans-suffix.
 
@@ -341,7 +341,7 @@ class Image(Nifti1, notifier.Notifier):
                    :meth:`__init__`, this may be calculated when the ``Image``
                    is created, or may be incrementally updated as more image 
                    data is loaded from disk.
-    ============== ======================================================
+    ============== ===========================================================
 
     
     The ``Image`` class implements the :class:`.Notifier` interface -
@@ -409,7 +409,6 @@ class Image(Nifti1, notifier.Notifier):
                         file is opened by ``nibabel``. Ignored if ``loadData``
                         is ``True``.
 
-
         :arg threaded:  If ``True``, the :class:`.ImageWrapper` will use a
                         separate thread for data range calculation. Defaults
                         to ``False``. Ignored if ``loadData`` is ``True``.

fsl/data/imagewrapper.py

@@ -149,8 +149,9 @@ class ImageWrapper(notifier.Notifier):
                         data range is updated directly on reads/writes.
         """
 
-        self.__image = image
-        self.__name  = name
+        self.__image      = image
+        self.__name       = name
+        self.__taskThread = None
 
         # Save the number of 'real' dimensions,
         # that is the number of dimensions minus
@@ -177,9 +178,7 @@ class ImageWrapper(notifier.Notifier):
         if loadData:
             self.loadData()
 
-        if not threaded:
-            self.__taskThread = None
-        else:
+        if threaded:
             self.__taskThread = async.TaskThread()
             self.__taskThread.start()