message: Megolm export: Clear bit 63 of the salt
diff: @@ -106,6 +106,12 @@ export function encryptMegolmKeyFile(data, password, options) {
  const salt = new Uint8Array(16);
  window.crypto.getRandomValues(salt);
  +
  + // clear bit 63 of the salt to stop us hitting the 64-bit counter boundary
  + // (which would mean we wouldn't be able to decrypt on Android). The loss
  + // of a single bit of salt is a price we have to pay.
  + salt[9] &= 0x7f;
  +
  const iv = new Uint8Array(16);
  window.crypto.getRandomValues(iv);
  