Description:
------------
If you throw Exception in try block and in finally block you throw and catch another exception than you loose first exception outside the try/catch/finally block. This bug work in 5.5.17, not work in 5.6.

Test script:
---------------
try {
	try {
		echo "1\n";
		throw new Exception("E1");
	} finally {
		try {
			echo "2\n";
			throw new Exception("E2");
		} catch (\Exception $e) {
			echo "3\n";
		}
	}
	echo "4-\n";
} catch (\Exception $e) {
	echo "4+".$e->getMessage()."\n";
}
echo "5\n";

Expected result:
----------------
1
2
3
4+E1
5

Actual result:
--------------
1
2
3
5