fix 95601 crash after getting new pop mail before selecting pop inbox r=naving, sr=sspitzer

mailnews/base/src/nsMsgDBView.cpp

@@ -2124,6 +2124,9 @@ nsMsgDBView::GetLocationCollationKey(nsIMsgHdr *msgHdr, PRUint8 **result, PRUint
     rv = msgHdr->GetFolder(getter_AddRefs(folder));
     NS_ENSURE_SUCCESS(rv,rv);
 
+    if (!folder)
+      return NS_ERROR_NULL_POINTER;
+
     nsCOMPtr <nsIMsgDatabase> dbToUse;
     rv = folder->GetMsgDatabase(nsnull, getter_AddRefs(dbToUse));
     NS_ENSURE_SUCCESS(rv,rv);

mailnews/local/src/nsParseMailbox.cpp

@@ -520,12 +520,12 @@ NS_IMETHODIMP nsParseMailMessageState::SetEnvelopePos(PRUint32 aEnvelopePos)
 
 NS_IMETHODIMP nsParseMailMessageState::GetNewMsgHdr(nsIMsgDBHdr ** aMsgHeader)
 {
-	if (aMsgHeader)
-	{
-		*aMsgHeader = m_newMsgHdr;
-		NS_IF_ADDREF(*aMsgHeader);
-	}
-	return NS_OK;
+  if (aMsgHeader)
+  {
+    *aMsgHeader = m_newMsgHdr;
+    NS_IF_ADDREF(*aMsgHeader);
+  }
+  return NS_OK;
 }
 
 NS_IMETHODIMP nsParseMailMessageState::ParseAFolderLine(const char *line, PRUint32 lineLength)
@@ -679,14 +679,14 @@ nsParseMailMessageState::IsEnvelopeLine(const char *buf, PRInt32 buf_size)
 // We've found the start of the next message, so finish this one off.
 NS_IMETHODIMP nsParseMailMessageState::FinishHeader()
 {
-	if (m_newMsgHdr)
-	{
-		  m_newMsgHdr->SetMessageKey(m_envelope_pos);
-		  m_newMsgHdr->SetMessageSize(m_position - m_envelope_pos);	// dmb - no longer number of lines.
-		  m_newMsgHdr->SetLineCount(m_body_lines);
-	}
-
-	return NS_OK;
+  if (m_newMsgHdr)
+  {
+    m_newMsgHdr->SetMessageKey(m_envelope_pos);
+    m_newMsgHdr->SetMessageSize(m_position - m_envelope_pos);	// dmb - no longer number of lines.
+    m_newMsgHdr->SetLineCount(m_body_lines);
+  }
+  
+  return NS_OK;
 }
 
 NS_IMETHODIMP nsParseMailMessageState::GetAllHeaders(char ** pHeaders, PRInt32 *pHeadersSize)
@@ -1342,7 +1342,7 @@ nsParseNewMailState::nsParseNewMailState()
 NS_IMPL_ISUPPORTS_INHERITED(nsParseNewMailState, nsMsgMailboxParser, nsIMsgFilterHitNotify)
 
 nsresult
-nsParseNewMailState::Init(nsIFolder *rootFolder, nsFileSpec &folder, nsIOFileStream *inboxFileStream)
+nsParseNewMailState::Init(nsIFolder *rootFolder, nsIMsgFolder *downloadFolder, nsFileSpec &folder, nsIOFileStream *inboxFileStream)
 {
     nsresult rv;
 	m_position = folder.GetFileSize();
@@ -1357,7 +1357,7 @@ nsParseNewMailState::Init(nsIFolder *rootFolder, nsFileSpec &folder, nsIOFileStr
 	{
 		nsCOMPtr <nsIFileSpec> dbFileSpec;
 		NS_NewFileSpecWithSpec(folder, getter_AddRefs(dbFileSpec));
-		rv = mailDB->Open(dbFileSpec, PR_TRUE, PR_FALSE, (nsIMsgDatabase **) getter_AddRefs(m_mailDB));
+		rv = mailDB->OpenFolderDB(downloadFolder, PR_TRUE, PR_FALSE, (nsIMsgDatabase **) getter_AddRefs(m_mailDB));
 	}
 //	rv = nsMailDatabase::Open(folder, PR_TRUE, &m_mailDB, PR_FALSE);
     if (NS_FAILED(rv)) 

mailnews/local/src/nsParseMailbox.h

@@ -217,7 +217,7 @@ public:
 	nsParseNewMailState();
 	virtual ~nsParseNewMailState();
 	NS_DECL_ISUPPORTS_INHERITED
-    nsresult Init(nsIFolder *rootFolder, nsFileSpec &folder, nsIOFileStream *inboxFileStream);
+    nsresult Init(nsIFolder *rootFolder, nsIMsgFolder *downloadFolder, nsFileSpec &folder, nsIOFileStream *inboxFileStream);
 
 	virtual void	DoneParsingFolder(nsresult status);
 	virtual void	SetUsingTempDB(PRBool usingTempDB, char *tmpDBName);

mailnews/local/src/nsPop3Sink.cpp

@@ -186,7 +186,7 @@ nsPop3Sink::BeginMailDelivery(PRBool uidlDownload, PRBool* aBool)
     rv = GetServerFolder(getter_AddRefs(serverFolder));
     if (NS_FAILED(rv)) return rv;
 
-    rv = m_newMailParser->Init(serverFolder, fileSpec, m_outFileStream);
+    rv = m_newMailParser->Init(serverFolder, m_folder, fileSpec, m_outFileStream);
 	// if we failed to initialize the parser, then just don't use it!!!
 	// we can still continue without one...
     if (NS_FAILED(rv))