Fix concurrent modification

Stephen Paul Weber created

Change summary

src/cheogram/java/eu/siacs/conversations/services/QuickConversationsService.java | 4 
1 file changed, 2 insertions(+), 2 deletions(-)

Detailed changes

src/cheogram/java/eu/siacs/conversations/services/QuickConversationsService.java 🔗 

@@ -114,8 +114,8 @@ public class QuickConversationsService extends AbstractQuickConversationsService
 
     protected Set<String> gateways(final Account account) {
         return Stream.concat(
-            account.getGateways("pstn").stream(),
-            account.getGateways("sms").stream()
+            ImmutableList.copyOf(account.getGateways("pstn")).stream(),
+            ImmutableList.copyOf(account.getGateways("sms")).stream()
         ).map(a -> a.getJid().asBareJid().toString()).collect(Collectors.toSet());
     }