pkgsMusl.libcdio: fix build (#203252)

pkgs/development/libraries/libcdio/default.nix

···
       url = "https://savannah.gnu.org/patch/download.php?file_id=52179";
       sha256 = "1v15gxhpi4bgcr12pb3d9c3hiwj0drvc832vic7sham34lhjmcbb";
     })
+  ] ++ lib.optionals stdenv.hostPlatform.isMusl [
+    (fetchpatch {
+      name = "musl-realpath-test.patch";
+      url = "https://git.alpinelinux.org/aports/plain/community/libcdio/disable-broken-test.patch?id=058a8695c12ae13b40c981ee98809352490b6155";
+      includes = [ "test/driver/realpath.c" ];
+      sha256 = "sha256-6j2bjMed2l+TFZ5emjCcozzF/kkGA8FVifJB8U7QceU=";
+    })
   ];
 
   postPatch = ''