#538 more dtor fixes and some style fixes along the way

Foundation/src/SortedDirectoryIterator.cpp

@@ -62,6 +62,7 @@ SortedDirectoryIterator::~SortedDirectoryIterator()
 {
 }
 
+
 SortedDirectoryIterator& SortedDirectoryIterator::operator ++()
 {
 	if (!_is_finished)

Foundation/src/SplitterChannel.cpp

@@ -29,7 +29,14 @@ SplitterChannel::SplitterChannel()
 
 SplitterChannel::~SplitterChannel()
 {
-	close();
+	try
+	{
+		close();
+	}
+	catch (...)
+	{
+		poco_unexpected();
+	}
 }