tonelib-gfx: fixed runtimeDependencies

pkgs/applications/audio/tonelib-gfx/default.nix

@@ -12,6 +12,7 @@
 , fribidi
 , pango
 , freetype
+, curl
 }:
 
 stdenv.mkDerivation rec {
@@ -50,6 +51,10 @@ stdenv.mkDerivation rec {
     mv $out/bin/ToneLib-GFX $out/bin/tonelib-gfx
   '';
 
+  runtimeDependencies = [
+    (lib.getLib curl)
+  ];
+
   meta = with lib; {
     description = "Tonelib GFX is an amp and effects modeling software for electric guitar and bass.";
     homepage = "https://tonelib.net/";