Fixed #1683 7.2 compatibility

app/subnets/addresses/address-details/address-details.php

@@ -280,7 +280,7 @@ if(sizeof($address)>1) {
     				}
     			}
     		}
-    		if(sizeof(@$active_shares)>0) {
+    		if(isset($active_shares)) {
     			# divider
                 print "<tr><td colspan='2'><h4 style='padding-top:20px;'>"._('Temporary shares')."</h4></tr>";
 
@@ -296,7 +296,7 @@ if(sizeof($address)>1) {
     			print "<td>";
     			print "</tr>";
     		}
-    		if(sizeof(@$expired_shares)>0) {
+    		if(isset($expired_shares)) {
     			# divider
     			print "<tr>";
     			print "	<th><hr></th>";

functions/scripts/discoveryCheck.php

@@ -234,7 +234,7 @@ $Result		= new Result();
 $discovered = 0;				//for mailing
 
 foreach($scan_subnets as $s) {
-	if(sizeof(@$s->discovered)>0) {
+	if(isset($s->discovered)) {
 		foreach($s->discovered as $ip) {
 			// fetch subnet
 			$subnet = $Subnets->fetch_subnet ("id", $s->id);