UpdateBKLTable: prevent call on a non-object

* fetch-assoc gets only called if there results.

UpdateBKLTable.php

@@ -35,10 +35,12 @@ class BKLLC extends Core {
 		$sql = 'SELECT DisID FROM Disambig;';
 		$result = $this->DB->query($sql);
 		$a = 0;
-		while ($row = $result->fetch_assoc()){
-			$AlreadySet[$a] = $row['DisID']; // Ruft alle bestehende Infos ab
-			$a++;
-		}
+		try {
+			while ($row = $result->fetch_assoc()) {
+				$AlreadySet[$a] = $row['DisID']; // Ruft alle bestehende Infos ab
+				$a++;
+			}
+		} catch (Exception $e) {}
 		$result->free();
 		$ListIDs = unserialize($this->getCatMembers('Kategorie:Begriffsklärung'));
 		$a=0;
@@ -47,7 +49,7 @@ class BKLLC extends Core {
 		if ($a < 200000)
 			return false; // Fehler in der Abfrage
 		$a=0;
-		while (isset ($ListIDs [$a])) {
+		while(isset($ListIDs[$a])) {
 			$sql = 'SELECT DisID FROM Disambig WHERE DisID = ' . $ListIDs [$a] . ';';
 			$result = $this->DB->query($sql);
 			if ($result === 0) {
@@ -60,10 +62,12 @@ class BKLLC extends Core {
 		$sql = 'SELECT DisID FROM Disambig;';
 		$result = $this->DB->query($sql);
 		$a = 0;
-		while ($row = $result->fetch_assoc()){
-			$AlreadySet[$a] = $row['DisID']; // Ruft alle bestehende Infos ab
-			$a++;
-		}
+		try {
+			while ($row = $result->fetch_assoc()){
+				$AlreadySet[$a] = $row['DisID']; // Ruft alle bestehende Infos ab
+				$a++;
+			}
+		} catch (Exception $e) {}
 		$result->free();
 		while(isset($AlreadySet[$a])) {
 			$b=0;