From 0fb4612680be27cd23c5dffeafac2d689c4a4efb Mon Sep 17 00:00:00 2001
From: mrkraimer <mrkraimer@comcast.net>
Date: Tue, 21 Nov 2017 05:25:51 -0500
Subject: [PATCH] fix bug in pvaClientNTMultiData that can cause a crash

---
 src/pvaClientNTMultiData.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pvaClientNTMultiData.cpp b/src/pvaClientNTMultiData.cpp
index 1f1caa5..c4ca69e 100644
--- a/src/pvaClientNTMultiData.cpp
+++ b/src/pvaClientNTMultiData.cpp
@@ -145,7 +145,7 @@ void PvaClientNTMultiData::endDeltaTime()
         PVStructurePtr pvst = topPVStructure[i];
         if(!pvst) {
             unionValue[i] = PVUnionPtr();
-        } else {
+        } else if(unionValue[i]) {
             unionValue[i]->set(pvst->getSubField("value"));
             if(gotAlarm)
             {