Issue #15179: Closed socket on connection failure. Thanks to Kazutaka Morita for the patch.

Lib/logging/handlers.py

@@ -771,7 +771,11 @@ class SysLogHandler(logging.Handler):
         except socket.error:
             self.socket.close()
             self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            try:
                 self.socket.connect(address)
+            except socket.error:
+                self.socket.close()
+                raise
 
     # curious: when talking to the unix-domain '/dev/log' socket, a
     #   zero-terminator seems to be required.  this string is placed