general safety in getImagettesLabelled

tools/label/label.py

@@ -679,8 +679,10 @@ def getImagettesLabelled(lab1, label, Phi, im1, im2, searchRange, boundingBoxes,
                 Coordinates of the top of the pixelSearch range in im1, i.e., the displacement that needs to be
                 added to the raw pixelSearch output to make it a im1 -> im2 displacement
     """
-    returnStatus = 1
+    returnStatus  = 1
+    imagette1     = None
     imagette1mask = None
+    imagette2     = None
     imagette2mask = None
 
     intDisplacement = numpy.round(Phi[0:3, 3]).astype(int)
@@ -738,8 +740,6 @@ def getImagettesLabelled(lab1, label, Phi, im1, im2, searchRange, boundingBoxes,
             # If all of imagette2 is nans it fell outside im2 (or in any case it's going to be difficult to correlate)
             if numpy.all(numpy.isnan(imagette2)):
                 returnStatus = -5
-        else:
-            imagette2 = None
 
     return {'imagette1':            imagette1,
             'imagette1mask':        imagette1mask,