[Bugfix] Fixing trying to import non-existent symbols from libnccl.so

vllm/distributed/device_communicators/pynccl_wrapper.py

@@ -281,20 +281,20 @@ class NCCLLibrary:
         # ncclResult_t ncclCommWindowRegister(
         #   ncclComm_t comm, void* buff, size_t size,
         #   ncclWindow_t* win, int winFlags);
-        # Function(
-        #     "ncclCommWindowRegister",
-        #     ncclResult_t,
-        #     [
-        #         ncclComm_t,
-        #         buffer_type,
-        #         ctypes.c_size_t,
-        #         ctypes.POINTER(ncclWindow_t),
-        #         ctypes.c_int,
-        #     ],
-        # ),
+        Function(
+            "ncclCommWindowRegister",
+            ncclResult_t,
+            [
+                ncclComm_t,
+                buffer_type,
+                ctypes.c_size_t,
+                ctypes.POINTER(ncclWindow_t),
+                ctypes.c_int,
+            ],
+        ),
         # ncclResult_t ncclCommWindowDeregister(
         #   ncclComm_t comm, ncclWindow_t win);
-        # Function("ncclCommWindowDeregister", ncclResult_t, [ncclComm_t, ncclWindow_t]),
+        Function("ncclCommWindowDeregister", ncclResult_t, [ncclComm_t, ncclWindow_t]),
     ]
 
     # class attribute to store the mapping from the path to the library