fix 17058 mac body filters, r=sspitzer

mailnews/base/search/public/nsMsgSearchScopeTerm.h

@@ -51,7 +51,7 @@ public:
 	nsMsgSearchScopeAttribute m_attribute;
 	char *m_name;
 	nsCOMPtr <nsIMsgFolder> m_folder;
-	nsIOFileStream		*m_fileStream;
+	nsInputFileStream		*m_fileStream;
 	nsCOMPtr <nsIMsgSearchAdapter> m_adapter;
 	PRBool m_searchServer;
 

mailnews/base/search/src/nsMsgBodyHandler.cpp

@@ -128,7 +128,7 @@ void nsMsgBodyHandler::OpenLocalFolder()
 		{
 			nsFileSpec path;
 			fileSpec->GetFileSpec(&path);
-			m_scope->m_fileStream = new nsIOFileStream(path);
+			m_scope->m_fileStream = new nsInputFileStream(path);
 		}
 	}
 	if (m_scope->m_fileStream)