Move getSwarm into try catch (#1021)

libsession/src/main/java/org/session/libsession/messaging/sending_receiving/pollers/Poller.kt

@@ -107,7 +107,8 @@ class Poller(
             Log.d(TAG, "Polling...")
 
             isPolling = true
-
+            var pollDelay = RETRY_INTERVAL_MS
+            try {
                 // check if the polling pool is empty
                 if (pollPool.isEmpty()){
                     // if it is empty, fill it with the snodes from our swarm
@@ -120,8 +121,6 @@ class Poller(
                 // remove that snode from the pool
                 pollPool.remove(currentNode)
 
-            var pollDelay = RETRY_INTERVAL_MS
-            try {
                 poll(currentNode)
                 retryScalingFactor = 1f
             } catch (e: Exception){