Close Unix sockets if the connection attempt fails

Make sure Unix sockets get closed if the connection fails.

Co-authored-by: Salvatore Mesoraca <salvatore.mesoraca@aiven.io>
Signed-off-by: Salvatore Mesoraca <salvatore.mesoraca@aiven.io>

valkey/connection.py

@@ -900,7 +900,12 @@ def _connect(self):
         "Create a Unix domain socket connection"
         sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
         sock.settimeout(self.socket_connect_timeout)
-        sock.connect(self.path)
+        try:
+            sock.connect(self.path)
+        except OSError:
+            # Prevent ResourceWarnings for unclosed sockets.
+            sock.close()
+            raise
         sock.settimeout(self.socket_timeout)
         return sock