human
Solve the following python programming problem given the following code:
def _as_rescale(self, get, targetbitdepth) : 
    'Helper used by :meth:`asRGB8` and :meth:`asRGBA8`.' 
    (width, height, pixels, meta) = get () 
    maxval = ((2 ** meta ['bitdepth']) - 1) 
    targetmaxval = ((2 ** targetbitdepth) - 1) 
    factor = (float (targetmaxval) / float (maxval)) 
    meta ['bitdepth'] = targetbitdepth 
    def iterscale() : 
        for row in pixels : 
            (yield [int (round ((x * factor))) for x in row]) 
if (maxval == targetmaxval) : 
        return (width, pixels, pixels, meta) 
else : 
        return (width, height, iterscale (), meta) 

    
    

    Fix the buggy line: return (width, pixels, pixels, meta)
assistant
#Here is Python program to fix the buggy line: return (width, pixels, pixels, meta)
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return (width, height, pixels, meta)