audacity: fix darwin build failure

We link binaries with /usr/lib/libSystem.B.dylib but patchPhase was
patching upstream fix_bundle script so that it was overriding references
to it with @loader_path/../Frameworks, breaking the build.

pkgs/by-name/au/audacity/package.nix

@@ -78,7 +78,7 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     mkdir src/private
     substituteInPlace scripts/build/macOS/fix_bundle.py \
-      --replace-fail "path.startswith('/usr/lib/')" "path.startswith('${builtins.storeDir}')"
+      --replace-fail "path.startswith('/usr/lib/')" "path.startswith('/usr/lib/') or path.startswith('${builtins.storeDir}')"
   ''
   + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace libraries/lib-files/FileNames.cpp \