[RFC v2 5/9] net/net: fix local variable shadowing in net_client_init

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Don't shadow Error *err: it's a bad thing. This patch also simplifies
following Error propagation conversion.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 net/net.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/net.c b/net/net.c
index 84aa6d8d00..5fc72511c1 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1128,10 +1128,10 @@ static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp)
 
             if (substrings[1]) {
                 /* User-specified prefix length.  */
-                int err;
+                int ret2;
 
-                err = qemu_strtoul(substrings[1], NULL, 10, &prefix_len);
-                if (err) {
+                ret2 = qemu_strtoul(substrings[1], NULL, 10, &prefix_len);
+                if (ret2) {
                     error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
                                "ipv6-prefixlen", "a number");
                     goto out;
-- 
2.21.0