runzip: enable tests

pkgs/by-name/ru/runzip/package.nix

@@ -24,11 +24,17 @@ stdenv.mkDerivation rec {
     sha256 = "0l5zbb5hswxczigvyal877j0aiq3fc01j3gv88bvy7ikyvw3lc07";
   };
 
+  postPatch = ''
+    patchShebangs tests/check-runzip.sh
+  '';
+
   env.NIX_CFLAGS_COMPILE = toString [
     "-Wno-error=implicit-int"
     "-Wno-error=incompatible-pointer-types"
   ];
 
+  doCheck = true;
+
   meta = {
     description = "Tool to convert filename encoding inside a ZIP archive";
     license = lib.licenses.bsd2;