BUG: Initialize image buffer in Inverse FFT example

Author: tbirdso

src/Filtering/FFT/ComputeInverseFFTOfImage/Code.py

@@ -37,6 +37,7 @@
 
     image = float_image_type.New(Regions=region)
     image.Allocate()
+    image.FillBuffer(0)
 
     # Make a square
     image[40:100, 40:100] = 100