MT#59962 DSMStateEngine: initialize current_diag to NULL

Fixes:

    Uninitialized pointer field (UNINIT_CTOR)
    Non-static class member current_diag is not initialized
    in this constructor nor in any functions that it calls.

Change-Id: I80fd5175edb68079e7b7da7a336bcc7f0e882016

apps/dsm/DSMStateEngine.cpp

@@ -275,14 +275,6 @@ bool DSMStateDiagram::checkHangupHandled(string& report) {
   return res;
 }
 
-
-DSMStateEngine::DSMStateEngine() 
-  : current(NULL) {
-}
-
-DSMStateEngine::~DSMStateEngine() {
-}
-
 bool DSMStateEngine::onInvite(const AmSipRequest& req, DSMSession* sess) {
   bool res = true;
   for (vector<DSMModule*>::iterator it =

apps/dsm/DSMStateEngine.h

@@ -320,8 +320,8 @@ class DSMStateEngine {
   vector<DSMModule*> mods;
 
  public: 
-  DSMStateEngine();
-  ~DSMStateEngine();
+  DSMStateEngine() : current(NULL), current_diag(NULL) {};
+  ~DSMStateEngine() {};
 
   void addDiagram(DSMStateDiagram* diag); 
   void addModules(vector<DSMModule*> modules);