fix uninit coverity issue 1075317, re #11829

Code/Mantid/Framework/WorkflowAlgorithms/inc/MantidWorkflowAlgorithms/AlignAndFocusPowder.h

@@ -62,7 +62,7 @@ Code Documentation is available at: <http://doxygen.mantidproject.org>
 */
 class DLLExport AlignAndFocusPowder : public API::Algorithm {
 public:
-  /// Empty Constructor
+  /// Constructor
   AlignAndFocusPowder();
   /// Destructor
   virtual ~AlignAndFocusPowder();

Code/Mantid/Framework/WorkflowAlgorithms/src/AlignAndFocusPowder.cpp

@@ -36,7 +36,10 @@ using API::FileProperty;
 DECLARE_ALGORITHM(AlignAndFocusPowder)
 
 AlignAndFocusPowder::AlignAndFocusPowder()
-    : API::Algorithm(), m_progress(NULL) {}
+    : API::Algorithm(), m_progress(NULL), m_l1(0.0), m_resampleX(0),
+      dspace(false), xmin(0.0), xmax(0.0), LRef(0.0), DIFCref(0.0), minwl(0.0),
+      tmin(0.0), tmax(0.0), m_preserveEvents(false), m_processLowResTOF(false),
+      m_lowResSpecOffset(0) {}
 
 AlignAndFocusPowder::~AlignAndFocusPowder() {
   if (m_progress)