socket: Initialize struct in_addr_t in getaddr()

We have false-positive "‘addr’ may be used uninitialized"
warnings with MinGW 13.0.0 compiler. Work around them.

Change-Id: I999916f9561a638214b70cf43de78060e9e0e792
Signed-off-by: Frank Lichtenheld <[email protected]>
Acked-by: Gert Doering <[email protected]>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1420
Message-Id: <[email protected]>
URL: https://www.mail-archive.com/[email protected]/msg34894.html
Signed-off-by: Gert Doering <[email protected]>

Author: flichtenheld

src/openvpn/socket.c

@@ -202,7 +202,7 @@ in_addr_t
 getaddr(unsigned int flags, const char *hostname, int resolve_retry_seconds, bool *succeeded,
         struct signal_info *sig_info)
 {
-    in_addr_t addr;
+    in_addr_t addr = { 0 };
     int status;
 
     status = get_addr_generic(AF_INET, flags, hostname, &addr, NULL, resolve_retry_seconds,