$OpenBSD: patch-fft_c,v 1.1 2021/01/31 20:18:25 naddy Exp $

Index: fft.c
--- fft.c.orig
+++ fft.c
@@ -147,7 +147,7 @@ static void fft_prepare(const sound_sample *input, dou
 #ifdef DEBUG
         printf("%i is reversed to %i and maps to %i %i\n", i, bitReverse[i], bitReverse[i] * 2, (bitReverse[i] * 2) + 1);
 #endif
-        sound_sample* ptr = &(input[bitReverse[i] * 2]);
+        const sound_sample* ptr = &(input[bitReverse[i] * 2]);
         *realptr++ = (ptr[0] + ptr[1]) / 2;
         *imagptr++ = 0;
     }
