putty: 0.71 -> 0.73 (security)

fixing CVE-2019-17069

the AM subsitutions appear to be very old - they break 0.73's build and
modern releases seem to do without them fine

pkgs/applications/networking/remote/putty/default.nix

@@ -1,9 +1,9 @@
 { stdenv, lib, fetchurl, autoconf, automake, pkgconfig, libtool
-, gtk2, halibut, ncurses, perl
+, gtk2, halibut, ncurses, perl, darwin
 }:
 
 stdenv.mkDerivation rec {
-  version = "0.71";
+  version = "0.73";
   pname = "putty";
 
   src = fetchurl {
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
       "https://the.earth.li/~sgtatham/putty/${version}/${pname}-${version}.tar.gz"
       "ftp://ftp.wayne.edu/putty/putty-website-mirror/${version}/${pname}-${version}.tar.gz"
     ];
-    sha256 = "1f66iss0kqk982azmxbk4xfm2i1csby91vdvly6cr04pz3i1r4rg";
+    sha256 = "076z34jpik2dmlwxicvf1djjgnahcqv12rjhmb9yq6ml7x0bbc1x";
   };
 
   # glib-2.62 deprecations
@@ -20,9 +20,6 @@ stdenv.mkDerivation rec {
   preConfigure = lib.optionalString stdenv.hostPlatform.isUnix ''
     perl mkfiles.pl
     ( cd doc ; make );
-    sed -e '/AM_PATH_GTK(/d' \
-        -e '/AC_OUTPUT/iAM_PROG_CC_C_O' \
-        -e '/AC_OUTPUT/iAM_PROG_AR' -i configure.ac
     ./mkauto.sh
     cd unix
   '' + lib.optionalString stdenv.hostPlatform.isWindows ''
@@ -41,7 +38,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoconf automake halibut libtool perl pkgconfig ];
   buildInputs = lib.optionals stdenv.hostPlatform.isUnix [
     gtk2 ncurses
-  ];
+  ] ++ lib.optional stdenv.isDarwin darwin.apple_sdk.libs.utmp;
   enableParallelBuilding = true;
 
   meta = with lib; {