Fix memory leak

getLastQueuedCommand(true) will implictly retain the last command, hence if we're not putting it in the waitlist, we should release it.

Change-Id: I1ad4ddcdf1df5237b83e1ea2447eb39a59f7dc3a

rocclr/hip_stream.cpp

@@ -159,10 +159,13 @@ void iHipWaitActiveStreams(amd::HostQueue* blocking_queue, bool wait_null_stream
           (stream->Null() == wait_null_stream)) {
         // Get the last valid command
         amd::Command* command = active_queue->getLastQueuedCommand(true);
-        if ((command != nullptr) &&
-            // Check the current active status
-            (command->status() != CL_COMPLETE)) {
-          eventWaitList.push_back(command);
+        if (command != nullptr) {
+          // Check the current active status
+          if (command->status() != CL_COMPLETE) {
+            eventWaitList.push_back(command);
+          } else {
+            command->release();
+          }
         }
       }
     }