see #7250, fix signature of RedisModule_DeauthenticateAndCloseClient (#7645)
see #7250, fix signature of RedisModule_DeauthenticateAndCloseClient (#7645)

In redismodule.h, RedisModule_DeauthenticateAndCloseClient returns void
`void REDISMODULE_API_FUNC(RedisModule_DeauthenticateAndCloseClient)(RedisModuleCtx *ctx, uint64_t client_id);`
But in module.c, RM_DeauthenticateAndCloseClient returns int
`int RM_DeauthenticateAndCloseClient(RedisModuleCtx *ctx, uint64_t client_id)`

It it safe to change return value from `void` to `int` from the user's perspective.
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