[monitoring-plugins] check_icmp: Fix compiler warning

[RincewindsHat]

 Module: monitoring-plugins
 Branch: master
 Commit: d3a4bad51d72a3c5bcc06ceb5e0a823dcc24bf49
 Author: RincewindsHat <12514511+RincewindsHat at users.noreply.github.com>
   Date: Sun Feb 19 14:31:21 2023 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=d3a4bad

check_icmp: Fix compiler warning

This fixes a compiler warning with no real world impact.
The compiler complains about a missing return, which is correct, but
in that scenario the program would crash anyways, so this has no impact.

---

 plugins-root/check_icmp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/plugins-root/check_icmp.c b/plugins-root/check_icmp.c
index 7f3c4b5..317cd53 100644
--- a/plugins-root/check_icmp.c
+++ b/plugins-root/check_icmp.c
@@ -1430,20 +1430,21 @@ set_source_ip(char *arg)
 static in_addr_t
 get_ip_address(const char *ifname)
 {
+  // TODO: Rewrite this so the function return an error and we exit somewhere else
+	struct sockaddr_in ip;
 #if defined(SIOCGIFADDR)
 	struct ifreq ifr;
-	struct sockaddr_in ip;
 
 	strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
 	ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0';
 	if(ioctl(icmp_sock, SIOCGIFADDR, &ifr) == -1)
 		crash("Cannot determine IP address of interface %s", ifname);
 	memcpy(&ip, &ifr.ifr_addr, sizeof(ip));
-	return ip.sin_addr.s_addr;
 #else
 	errno = 0;
 	crash("Cannot get interface IP address on this platform.");
 #endif
+	return ip.sin_addr.s_addr;
 }
 
 /*