Check whether the acquisition is still running when detructing CtControl and...

Check whether the acquisition is still running when detructing  CtControl and stop the aquistion accordingly.

This situation may happen when an exception is thrown from Lima and 
caught at a higher level in the application and could lead to SegFault.

control/src/CtControl.cpp

@@ -390,6 +390,14 @@ CtControl::CtControl(HwInterface *hw) :
 CtControl::~CtControl()
 {
   DEB_DESTRUCTOR();
+  
+  Status aStatus;
+  getStatus(aStatus);
+  if(aStatus.AcquisitionStatus == AcqRunning)
+  {
+    DEB_WARNING() << "Acquisition is still running, stopping acquisition";
+    stopAcq();
+  }
 
   DEB_TRACE() << "Waiting for all threads to finish their tasks";
   PoolThreadMgr& pool_thread_mgr = PoolThreadMgr::get();