Fix some small errors that valgrind found

src/wx/guiinit.cpp

@@ -3197,7 +3197,7 @@ void MainFrame::set_global_accels()
         // set the table on the panel, where focus usually is
         // otherwise accelerators are lost sometimes
         panel->SetAcceleratorTable(atab);
-        delete tab;
+        delete[] tab;
     }
     else
     {

src/wx/wxvbam.h

@@ -57,7 +57,7 @@ class MainFrame;
 class wxvbamApp : public wxApp
 {
 public:
-    wxvbamApp() : wxApp(), pending_fullscreen(false) {}
+    wxvbamApp() : wxApp(), pending_fullscreen(false),cfg(NULL),overrides(NULL),frame(NULL) {}
     virtual bool OnInit();
     virtual void OnInitCmdLine(wxCmdLineParser &);
     virtual bool OnCmdLineParsed(wxCmdLineParser &);