lbzip2: apply implicit function definition patch; fix darwin

kjn/lbzip2#33
(cherry picked from commit eb2b024)

pkgs/tools/compression/lbzip2/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, gnulib, perl, autoconf, automake }:
+{ lib, stdenv, fetchFromGitHub, fetchpatch, gnulib, perl, autoconf, automake }:
 
 stdenv.mkDerivation rec {
   pname = "lbzip2";
@@ -11,6 +11,17 @@ stdenv.mkDerivation rec {
     sha256 = "1h321wva6fp6khz6x0i6rqb76xh327nw6v5jhgjpcckwdarj5jv8";
   };
 
+  patches = [
+    # This avoids an implicit function declaration when building gnulib's
+    # xmalloc.c, addressing a build failure with future compiler version.
+    # https://github.com/kjn/lbzip2/pull/33
+    (fetchpatch {
+      name = "GNULIB_XALLOC_DIE.patch";
+      url = "https://github.com/kjn/lbzip2/commit/32b5167940ec817e454431956040734af405a9de.patch";
+      hash = "sha256-YNgmkh4bksIq5kBgZP+8o97aMm9CzFZldfUW6L5DGXk=";
+    })
+  ];
+
   buildInputs = [ gnulib perl ];
   nativeBuildInputs = [ autoconf automake ];