Merge branch 'fix/unused-ctid' into develop

frontend/includes/include.misc.php

@@ -61,8 +61,8 @@ function first_unused_ctid()
 	$highest = 101;
 	
 	/* Collect all known CTIDs and keep track of the highest CTID. */
-	$result = $database->CachedQuery("SELECT `InternalId` FROM containers WHERE `VirtualizationType` = 1", array(), 0);
-	
+	if($result = $database->CachedQuery("SELECT `InternalId` FROM containers WHERE `VirtualizationType` = 1", array(), 0))
+	{
 		foreach($result->data as $row)
 		{
 			$id = filter_var($row['InternalId'] ,FILTER_VALIDATE_INT);
@@ -77,6 +77,7 @@ function first_unused_ctid()
 				}
 			}
 		}
+	}
 	
 	/* Generate a list of all possible CTIDs between 101 and the highest CTID, and find
 	 * all possible CTIDs that do not exist in the known CTID list. We use array_merge