Avoid endless loop deleting CFGAS_GEFont.

xfa/fxfa/app/xfa_textpiece.cpp

Index: xfa/fxfa/app/xfa_textpiece.cpp
diff --git a/xfa/fxfa/app/xfa_textpiece.cpp b/xfa/fxfa/app/xfa_textpiece.cpp
index 4b57aa82d9be82f1be1d312955facab7e9b93f5d..933af6c92f3ea3b9493055bc3d81dae3d893961a 100644
--- a/xfa/fxfa/app/xfa_textpiece.cpp
+++ b/xfa/fxfa/app/xfa_textpiece.cpp
@@ -9,9 +9,12 @@
 #include "xfa/fxfa/app/cxfa_linkuserdata.h"
 
 XFA_TextPiece::XFA_TextPiece()
-    : pszText(nullptr), pFont(nullptr), pLinkData(nullptr) {}
+    : pszText(nullptr), pWidths(nullptr), pFont(nullptr), pLinkData(nullptr) {}
 
 XFA_TextPiece::~XFA_TextPiece() {
   if (pLinkData)
     pLinkData->Release();
+
+  FX_Free(pszText);
+  FX_Free(pWidths);
 }