Fix Node NumberFormatException

src/de/steamwar/bungeecore/Node.java

@@ -191,7 +191,7 @@ public abstract class Node {
             int c;
             try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
                 c = Integer.parseInt(bufferedReader.readLine());
-            } catch (IOException e) {
+            } catch (IOException | NumberFormatException e) {
                 BungeeCore.get().getLogger().log(Level.SEVERE, "Could not read cores of" + remote, e);
                 c = 1;
             }