Make CPDFXFA_App / IXFA_AppProvider saner

xfa/src/fxfa/src/app/xfa_ffapp.cpp

Index: xfa/src/fxfa/src/app/xfa_ffapp.cpp
diff --git a/xfa/src/fxfa/src/app/xfa_ffapp.cpp b/xfa/src/fxfa/src/app/xfa_ffapp.cpp
index 67ec95b0095cb81da3030d55e17118e6f6fd1972..abd02460d1a4868b0efd64c0f0dbea5f9f929402 100644
--- a/xfa/src/fxfa/src/app/xfa_ffapp.cpp
+++ b/xfa/src/fxfa/src/app/xfa_ffapp.cpp
@@ -134,9 +134,14 @@ FX_BOOL CXFA_FileRead2::ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
     }
     return FALSE;
 }
+// static
 IXFA_App* IXFA_App::Create(IXFA_AppProvider* pProvider)
 {
-    return FX_NEW CXFA_FFApp(pProvider);
+    return new CXFA_FFApp(pProvider);
+}
+// virtual
+IXFA_App::~IXFA_App()
+{
 }
 CXFA_FFApp::CXFA_FFApp(IXFA_AppProvider* pProvider)
     : m_pDocHandler(NULL)