am 8ab76778: Merge "KeyChain: return null instead of throw"

# Via Gerrit Code Review (1) and Kenny Root (1)
* commit '8ab767786a3b59c72b613f84d40b181428327ac1':
  KeyChain: return null instead of throw

1 files changed, 6 insertions, 1 deletions

diff --git a/keystore/java/android/security/KeyChain.java b/keystore/java/android/security/KeyChain.java
index 31c38d5..d7119fff 100644
--- a/keystore/java/android/security/KeyChain.java
+++ b/keystore/java/android/security/KeyChain.java
@@ -336,7 +336,12 @@ public final class KeyChain {
         KeyChainConnection keyChainConnection = bind(context);
         try {
             IKeyChainService keyChainService = keyChainConnection.getService();
-            byte[] certificateBytes = keyChainService.getCertificate(alias);
+
+            final byte[] certificateBytes = keyChainService.getCertificate(alias);
+            if (certificateBytes == null) {
+                return null;
+            }
+
             TrustedCertificateStore store = new TrustedCertificateStore();
             List<X509Certificate> chain = store
                     .getCertificateChain(toCertificate(certificateBytes));