remove dead code, release gil on increment (#300)

python/src/addons/match_iterator.pyx

@@ -9,34 +9,18 @@ cdef class MatchIterator:
  cdef _MatchIterator it
  cdef _MatchIterator end
 
- #def __cinit__(self, ):
- # self.end = new _MatchIterator()
-
- # Most likely, you will be calling this directly from this
- # or another Cython module, not from Python.
- #cdef set_iter(self, _MatchIterator it):
- # self.it = it
-
  def __iter__(self):
  return self
 
- #def __dealloc__(self):
- # This works by calling "delete" in C++, you should not
- # fear that Cython will call "free"
- # del self.it
- # del self.end
-
  def __next__(self):
- # This works correctly by using "*it" and "*end" in the code,
  #if co.dereference( self.it ) == co.dereference( self.end ) :
  if self.it == self.end:
 
  raise StopIteration()
  cdef _Match * _r = new _Match(co.dereference( self.it ))
-
- # This also does the expected thing.
- co.preincrement( self.it )
-
+ with nogil:
+ co.preincrement( self.it )
+
  cdef Match py_result = Match.__new__(Match)
  py_result.inst = shared_ptr[_Match](_r)