message: Suppress some warnings about ignored exceptions.
diff: @@ -109,7 +109,8 @@ public final class KeysetHandle {
  Keyset keyset = reader.read();
  assertNoSecretKeyMaterial(keyset);
  return KeysetHandle.fromKeyset(keyset);
  - } catch (InvalidProtocolBufferException e) {
  + } catch (@SuppressWarnings("UnusedException") InvalidProtocolBufferException e) {
  + // Do not propagate InvalidProtocolBufferException to guarantee no key material is leaked
  throw new GeneralSecurityException("invalid keyset");
  }
  }
  @@ -130,7 +131,8 @@ public final class KeysetHandle {
  Keyset keyset = Keyset.parseFrom(serialized, ExtensionRegistryLite.getEmptyRegistry());
  assertNoSecretKeyMaterial(keyset);
  return KeysetHandle.fromKeyset(keyset);
  - } catch (InvalidProtocolBufferException e) {
  + } catch (@SuppressWarnings("UnusedException") InvalidProtocolBufferException e) {
  + // Do not propagate InvalidProtocolBufferException to guarantee no key material is leaked
  throw new GeneralSecurityException("invalid keyset");
  }
  }
  @@ -171,7 +173,8 @@ public final class KeysetHandle {
  if (!keyset2.equals(keyset)) {
  throw new GeneralSecurityException("cannot encrypt keyset");
  }
  - } catch (InvalidProtocolBufferException e) {
  + } catch (@SuppressWarnings("UnusedException") InvalidProtocolBufferException e) {
  + // Do not propagate InvalidProtocolBufferException to guarantee no key material is leaked
  throw new GeneralSecurityException("invalid keyset, corrupted key material");
  }
  return EncryptedKeyset.newBuilder()
  @@ -193,7 +196,8 @@ public final class KeysetHandle {
  // check emptiness here too, in case the encrypted keys unwrapped to nothing?
  assertEnoughKeyMaterial(keyset);
  return keyset;
  - } catch (InvalidProtocolBufferException e) {
  + } catch (@SuppressWarnings("UnusedException") InvalidProtocolBufferException e) {
  + // Do not propagate InvalidProtocolBufferException to guarantee no key material is leaked
  throw new GeneralSecurityException("invalid keyset, corrupted key material");
  }
  }
  