diff --git a/mozilla/htmlparser/src/CNavDTD.cpp b/mozilla/htmlparser/src/CNavDTD.cpp
index 96b1c87b35b..d0ad1720a5d 100644
--- a/mozilla/htmlparser/src/CNavDTD.cpp
+++ b/mozilla/htmlparser/src/CNavDTD.cpp
@@ -233,6 +233,7 @@ CNavDTD::CNavDTD() : nsIDTD(), mTokenDeque(gTokenKiller)  {
   NS_INIT_REFCNT();
   mParser=0;
   mFilename=0;
+  mSink = nsnull;
   mDTDDebug=0;
   nsCRT::zero(mLeafBits,sizeof(mLeafBits));
   nsCRT::zero(mContextStack,sizeof(mContextStack));
diff --git a/mozilla/parser/htmlparser/src/CNavDTD.cpp b/mozilla/parser/htmlparser/src/CNavDTD.cpp
index 96b1c87b35b..d0ad1720a5d 100644
--- a/mozilla/parser/htmlparser/src/CNavDTD.cpp
+++ b/mozilla/parser/htmlparser/src/CNavDTD.cpp
@@ -233,6 +233,7 @@ CNavDTD::CNavDTD() : nsIDTD(), mTokenDeque(gTokenKiller)  {
   NS_INIT_REFCNT();
   mParser=0;
   mFilename=0;
+  mSink = nsnull;
   mDTDDebug=0;
   nsCRT::zero(mLeafBits,sizeof(mLeafBits));
   nsCRT::zero(mContextStack,sizeof(mContextStack));