Merge pull request #3046 from SvenLauterbach/fix_credential_locker

Fix credential locker example

Author: hickeys

windows-apps-src/security/credential-locker.md

@@ -79,7 +79,18 @@ private Windows.Security.Credentials.PasswordCredential GetCredentialFromLocker(
     Windows.Security.Credentials.PasswordCredential credential = null;
 
     var vault = new Windows.Security.Credentials.PasswordVault();
-    var credentialList = vault.FindAllByResource(resourceName);
+
+    IReadOnlyList<PasswordCredential> credentialList = null;
+
+    try
+    {
+        credentialList = vault.FindAllByResource(resourceName);
+    }
+    catch(Exception)
+    {
+        return null;
+    }
+
     if (credentialList.Count > 0)
     {
         if (credentialList.Count == 1)

windows-apps-src/security/intro-to-secure-windows-app-development.md

@@ -334,7 +334,17 @@ private PasswordCredential GetCredentialFromLocker()
     PasswordCredential credential = null;
 
     var vault = new PasswordVault();
-    var credentialList = vault.FindAllByResource(resourceName);
+
+    IReadOnlyList<PasswordCredential> credentialList = null;
+
+    try
+    {
+        credentialList = vault.FindAllByResource(resourceName);
+    }
+    catch(Exception)
+    {
+        return null;
+    }
 
     if (credentialList.Count == 1)
     {