passphrases are not retrieved from cache when signing

[dschuermann]

passphrases are not retrieved from cache when signing

[mgeier63]

sorry to not be able to provide you with a PR,
but here's how i fixed this on my local copy.

Index: OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java (revision 1923942fc97534eb86177053a29868df5223cb16)
+++ OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpSignEncryptOperation.java (revision )
@@ -178,13 +178,21 @@
                     case PIN:
                     case PATTERN:
                     case PASSPHRASE: {
-                        if (cryptoInput.getPassphrase() == null) {
+                        Passphrase localPassphrase = cryptoInput.getPassphrase();
+                        if (localPassphrase==null) {
+                            try {
+                                localPassphrase = getCachedPassphrase(signingKeyRing.getMasterKeyId(), signingKey.getKeyId());
+                            } catch (PassphraseCacheInterface.NoSecretKeyException e) {
+                                //
+                            }
+                        }
+                        if (localPassphrase == null) {
                             log.add(LogType.MSG_PSE_PENDING_PASSPHRASE, indent + 1);
                             return new PgpSignEncryptResult(log, RequiredInputParcel.createRequiredSignPassphrase(
                                     signingKeyRing.getMasterKeyId(), signingKey.getKeyId(),
                                     cryptoInput.getSignatureTime()));
                         }
-                        if (!signingKey.unlock(cryptoInput.getPassphrase())) {
+                        if (!signingKey.unlock(localPassphrase)) {
                             log.add(LogType.MSG_PSE_ERROR_BAD_PASSPHRASE, indent);
                             return new PgpSignEncryptResult(PgpSignEncryptResult.RESULT_ERROR, log);
                         }

[dschuermann]

done in 51bb967