catch some more NPE in Resolver.java

1 files changed, 6 insertions, 1 deletions

diff --git a/src/main/java/de/pixart/messenger/utils/Resolver.java b/src/main/java/de/pixart/messenger/utils/Resolver.java
index 86bdc40aa..4eb42db7e 100644
--- a/src/main/java/de/pixart/messenger/utils/Resolver.java
+++ b/src/main/java/de/pixart/messenger/utils/Resolver.java
@@ -6,6 +6,8 @@ import android.util.Log;
 
 import androidx.annotation.NonNull;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.io.IOException;
 import java.lang.reflect.Field;
 import java.net.InetAddress;
@@ -65,7 +67,9 @@ public class Resolver {
             final Field dnsClientField = ReliableDNSClient.class.getDeclaredField("dnsClient");
             dnsClientField.setAccessible(true);
             final DNSClient dnsClient = (DNSClient) dnsClientField.get(reliableDNSClient);
-            dnsClient.getDataSource().setTimeout(3000);
+            if (dnsClient != null) {
+                dnsClient.getDataSource().setTimeout(3000);
+            }
             final Field useHardcodedDnsServers = DNSClient.class.getDeclaredField("useHardcodedDnsServers");
             useHardcodedDnsServers.setAccessible(true);
             useHardcodedDnsServers.setBoolean(dnsClient, false);
@@ -382,6 +386,7 @@ public class Resolver {
             return socket;
         }
 
+        @NotNull
         @Override
         public String toString() {
             return "Result{" +