magnetophonDSP.MBdistortion: fix build

Apply upstream patch fixing the issue observed in nixpkgs previously.
Resolves #114854. Thanks to Marek Fajkus for fixing this up and
reporting back.

pkgs/applications/audio/magnetophonDSP/MBdistortion/default.nix

···
-{ lib, stdenv, fetchFromGitHub, faust2jaqt, faust2lv2 }:
+{ lib, stdenv, fetchFromGitHub, fetchpatch, faust2jaqt, faust2lv2 }:
 stdenv.mkDerivation rec {
   pname = "MBdistortion";
   version = "1.1.1";
···
     rev = "V${version}";
     sha256 = "0mdzaqmxzgspfgx9w1hdip18y17hwpdcgjyq1rrfm843vkascwip";
   };
+
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/magnetophon/MBdistortion/commit/10e35084b88c559f1b63760cf40fd5ef5a6745a5.patch";
+      sha256 = "0hwjl3rzvn3id0sr0qs8f37jdmr915mdan8miaf78ra0ir3wnk76";
+    })
+  ];
 
   buildInputs = [ faust2jaqt faust2lv2 ];