spandsp: backport additional memory safety fix

This one caused a test failure on x86_64-unknown-linux-musl.

Closes: https://github.com/NixOS/nixpkgs/issues/458398
See PR #459116

pkgs/development/libraries/spandsp/default.nix

@@ -2,6 +2,8 @@
   fetchurl,
   fetchpatch,
   callPackage,
+  lib,
+  stdenv,
 }:
 
 (callPackage ./common.nix { }) rec {
@@ -11,11 +13,31 @@
     sha256 = "0rclrkyspzk575v8fslzjpgp4y2s4x7xk3r55ycvpi4agv33l1fc";
   };
   patches = [
-    (fetchpatch {
-      url = "https://github.com/freeswitch/spandsp/commit/f7b96b08db148763039cf3459d0e00da9636eb92.patch";
-      includes = [ "spandsp-sim/g1050.c" ];
-      hash = "sha256-TwMhWJXQG/UaWddWgice0klp1uATyHMiE6DcsCebXYQ=";
-    })
+    # FIXME: clean up rebuild avoidance on staging.
+    (
+      if
+        lib.elem stdenv.hostPlatform.config [
+          "arm64-apple-darwin"
+          "aarch64-unknown-linux-gnu"
+          "x86_64-apple-darwin"
+          "x86_64-unknown-linux-gnu"
+        ]
+      then
+        fetchpatch {
+          url = "https://github.com/freeswitch/spandsp/commit/f7b96b08db148763039cf3459d0e00da9636eb92.patch";
+          includes = [ "spandsp-sim/g1050.c" ];
+          hash = "sha256-TwMhWJXQG/UaWddWgice0klp1uATyHMiE6DcsCebXYQ=";
+        }
+      else
+        fetchpatch {
+          url = "https://github.com/freeswitch/spandsp/commit/f7b96b08db148763039cf3459d0e00da9636eb92.patch";
+          includes = [
+            "spandsp-sim/g1050.c"
+            "spandsp-sim/test_utils.c"
+          ];
+          hash = "sha256-2MmVgyMUK0Zn+mL7IX57Y7brYpgmt4GVlis5/NstuNM=";
+        }
+    )
     (fetchpatch {
       url = "https://github.com/freeswitch/spandsp/commit/f47bcdc301fbddad44e918939eed1b361882f740.patch";
       hash = "sha256-O+lIC3V92GVFoiHsUQOXkoTN2hJ7v5+LQP7RrAhvwlY=";