net/core: Remove unused assignment operations and variable

Although if_info_size is assigned, it has not been used. And the variable
should also be deleted.

The clang_analyzer complains as follows:

net/core/rtnetlink.c:3806: warning:

Although the value stored to 'if_info_size' is used in the enclosing
expression, the value is never actually read from 'if_info_size'.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 564d24c451af7c58e9fab5c3a1178f1026bf86bc..79477dcae7c2e4a7dd5868690ff2945d332485fe 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3804,9 +3804,8 @@ struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
        struct net *net = dev_net(dev);
        struct sk_buff *skb;
        int err = -ENOBUFS;
-       size_t if_info_size;
 
-       skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags);
+       skb = nlmsg_new(if_nlmsg_size(dev, 0), flags);
        if (skb == NULL)
                goto errout;