pvget/pvinfo check for NULL channel

pvtoolsSrc/pvget.cpp

@@ -565,6 +565,8 @@ int main (int argc, char *argv[])
                 std::cerr<<"Provider "<<uri.protocol<<" can't create channel \""<<pvs[n]<<"\"\n";
                 return 1;
             }
+            if(!channel)
+                continue;
             chan_cache[pvs[n]] = channel;
         } else {
             channel = it->second;

pvtoolsSrc/pvinfo.cpp

@@ -190,6 +190,7 @@ int main (int argc, char *argv[])
         for (int n = 0; n < nPvs; n++)
         {
             Channel::shared_pointer channel = channels[n];
+            if(!channel) continue;
 
             TR1::shared_ptr<GetFieldRequesterImpl> getFieldRequesterImpl(new GetFieldRequesterImpl(channel));
             channel->getField(getFieldRequesterImpl, "");