Linux: fix a memory leak introduced with 7e8ae57

Author: BoboTiG

CHANGELOG

@@ -2,6 +2,9 @@ History:
 
 <see Git checking messages for history>
 
+3.3.1   2018/xx/xx
+      - Linux: fix a memory leak introduced with 7e8ae5703f0669f40532c2be917df4328bc3985e
+
 3.3.0   2018/09/04
       - Linux: add an error handler for the XServer to prevent interpreter crash (fix #61)
       - MSS: fix a ResourceWarning: unclosed file in setup.py

docs/source/conf.py

@@ -29,7 +29,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = "3.3.0"
+version = "3.3.1"
 
 # The full version, including alpha/beta/rc tags.
 release = "latest"

mss/__init__.py

@@ -13,7 +13,7 @@
 from .exception import ScreenShotError
 from .factory import mss
 
-__version__ = "3.3.0"
+__version__ = "3.3.1"
 __author__ = "Mickaël 'Tiger-222' Schoentgen"
 __copyright__ = """
     Copyright (c) 2013-2018, Mickaël 'Tiger-222' Schoentgen

mss/linux.py

@@ -148,12 +148,15 @@ class MSS(MSSBase):
 
     def __del__(self):
         # type: () -> None
-        """ Disconnect from X server. """
+        """ Disconnect from X server and clean-up locals. """
 
-        if hasattr(self, "display"):
-            if hasattr(self.display, "XCloseDisplay"):
-                self.xlib.XCloseDisplay(self.display)
-            self.display = None
+        try:
+            self.xlib.XCloseDisplay(self.display)
+        except AttributeError:
+            pass
+
+        for attr in list(vars(self)):
+            delattr(self, attr)
 
     def __init__(self, display=None):
         # type: (bytes) -> None