freicoin: fix build by disabling miniupnpc support

development has stalled and miniupnpc library is incompatible with
freicoin.

pkgs/applications/altcoins/freicoin.nix

@@ -11,16 +11,18 @@ stdenv.mkDerivation rec {
     sha256 = "1m5pcnfhwhcj7q00p2sy3h73rkdm3w6grmljgiq53gshcj08cq1z";
   };
 
+  qmakeFlags = ["USE_UPNP=-"];
+
   # I think that openssl and zlib are required, but come through other
   # packages
 
   installPhase = ''
     mkdir -p $out/bin
     cp freicoin-qt $out/bin
-    '';
+  '';
 
   nativeBuildInputs = [ qmake4Hook ];
-  buildInputs = [ db boost gmp mpfr miniupnpc qt4 ];
+  buildInputs = [ db boost gmp mpfr qt4 ];
 
   meta = with stdenv.lib; {
     description = "Peer-to-peer currency with demurrage fee";