Avoid leaking the memory for the name.

Author: abergeron

pygpu/_elemwise.pyx

@@ -49,6 +49,9 @@ cdef class arg:
         memset(&self.a, 0, sizeof(gpuelemwise_arg))
 
     def __init__(self, name, type, read=False, write=False, scalar=False):
+        # Make sure to clear previous storage
+        # __init__ may be called more than once
+        free(self.a.name)
         self.a.name = strdup(to_bytes(name))
         if self.a.name is NULL:
             raise MemoryError
@@ -63,6 +66,9 @@ cdef class arg:
         if self.a.flags == 0:
             raise ValueError('no flags specified for arg %s' % (name,))
 
+    def __dealloc__(self):
+        free(self.a.name)
+
     property name:
         def __get__(self):
             return self.a.name.decode('ascii')