$OpenBSD: patch-blitz_convolve_cpp,v 1.1 2018/04/16 15:54:14 naddy Exp $

Index: blitz/convolve.cpp
--- blitz/convolve.cpp.orig
+++ blitz/convolve.cpp
@@ -940,7 +940,7 @@ float* BlitzPrivate::getBlurKernel(int &kernel_width, 
     long i;
 
     if(sigma == 0.0)
-        return(false);
+        return(NULL);
     if(kernel_width == 0)
         kernel_width = 3;
 
