/QPIDJMS-168 fix potential NPE

Project: http://git-wip-us.apache.org/repos/asf/qpid-jms/repo
Commit: http://git-wip-us.apache.org/repos/asf/qpid-jms/commit/a02c533a
Tree: http://git-wip-us.apache.org/repos/asf/qpid-jms/tree/a02c533a
Diff: http://git-wip-us.apache.org/repos/asf/qpid-jms/diff/a02c533a

Branch: refs/heads/master
Commit: a02c533a6a7184c0243025f8eebc67edb68643a4
Parents: c99ea85
Author: Timothy Bish <[email protected]>
Authored: Tue Apr 5 12:46:17 2016 -0400
Committer: Timothy Bish <[email protected]>
Committed: Tue Apr 5 12:46:17 2016 -0400

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 .../org/apache/qpid/jms/provider/failover/FailoverProvider.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/qpid-jms/blob/a02c533a/qpid-jms-client/src/main/java/org/apache/qpid/jms/provider/failover/FailoverProvider.java
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diff --git 
a/qpid-jms-client/src/main/java/org/apache/qpid/jms/provider/failover/FailoverProvider.java
 
b/qpid-jms-client/src/main/java/org/apache/qpid/jms/provider/failover/FailoverProvider.java
index 6399080..fa20ee1 100644
--- 
a/qpid-jms-client/src/main/java/org/apache/qpid/jms/provider/failover/FailoverProvider.java
+++ 
b/qpid-jms-client/src/main/java/org/apache/qpid/jms/provider/failover/FailoverProvider.java
@@ -696,7 +696,9 @@ public class FailoverProvider extends 
DefaultProviderListener implements Provide
                         LOG.info("Connection attempt:[{}] to: {} failed", 
reconnectAttempts, target);
                         failure = e;
                         try {
-                            provider.close();
+                            if (provider != null) {
+                                provider.close();
+                            }
                         } catch (Throwable ex) {}
                     }
                 } else {


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