error: Strip trailing '\n' from an error string argument

Tracked down with scripts/coccinelle/err-bad-newline.cocci.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20250312143504.1659061-1-armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Song Gao <gaosong@loongson.cn>

net/vmnet-common.m

@@ -94,7 +94,7 @@ ssize_t vmnet_receive_common(NetClientState *nc,
 
     if_status = vmnet_write(s->vmnet_if, &packet, &pkt_cnt);
     if (if_status != VMNET_SUCCESS) {
-        error_report("vmnet: write error: %s\n",
+        error_report("vmnet: write error: %s",
                      vmnet_status_map_str(if_status));
         return -1;
     }