Fix for pypy

Author: WyattBlue

av/container/output.py

@@ -1,4 +1,5 @@
 import os
+import sys
 
 import cython
 from cython.cimports import libav as lib
@@ -36,12 +37,15 @@ def __cinit__(self, *args, **kwargs):
             self.packet_ptr = lib.av_packet_alloc()
 
     def __del__(self):
-        try:
-            close_output(self)
-        except Exception:
-            pass
+        if "__pypy__" not in sys.builtin_module_names:
+            try:
+                close_output(self)
+            except Exception:
+                pass
 
     def __dealloc__(self):
+        if "__pypy__" in sys.builtin_module_names:
+            close_output(self)
         with cython.nogil:
             lib.av_packet_free(cython.address(self.packet_ptr))