Null CPDF_CountedObj::m_pObj prior to deletion

core/fxcrt/cfx_string_data_template.h

Index: core/fxcrt/cfx_string_data_template.h
diff --git a/core/fxcrt/cfx_string_data_template.h b/core/fxcrt/cfx_string_data_template.h
index 225020a7dd98a753ae06da6257fd51d92291a195..5f7bfa1f83c2381019eabc2f578c074d601b9997 100644
--- a/core/fxcrt/cfx_string_data_template.h
+++ b/core/fxcrt/cfx_string_data_template.h
@@ -85,7 +85,7 @@ class CFX_StringDataTemplate {
   // Since the count increments with each new pointer, the largest value is
   // the number of pointers that can fit into the address space. The size of
   // the address space itself is a good upper bound on it.
-  intptr_t m_nRefs;  // Would prefer ssize_t, but no windows support.
+  intptr_t m_nRefs;
 
   // |FX_STRSIZE| is currently typedef'd as |int|.
   // TODO(palmer): It should be a |size_t|, or at least unsigned.