simplify

libtextsecure/message_receiver.js

@@ -1095,20 +1095,16 @@ MessageReceiver.prototype.extend({
   },
   async handlePairingRequest(envelope, pairingRequest) {
     const valid = await this.validateAuthorisation(pairingRequest);
-    if (!valid) {
-      return this.removeFromCache(envelope);
-    }
-    await window.libloki.storage.savePairingAuthorisation(pairingRequest);
-    if (Whisper.events.isListenedTo('devicePairingRequestReceived')) {
-      Whisper.events.trigger(
-        'devicePairingRequestReceived',
-        pairingRequest.secondaryDevicePubKey
-      );
-    } else {
-      Whisper.events.trigger(
-        'devicePairingRequestRejected',
-        pairingRequest.secondaryDevicePubKey
-      );
+    if (valid) {
+      // Pairing dialog is open and is listening
+      if (Whisper.events.isListenedTo('devicePairingRequestReceived')) {
+        await window.libloki.storage.savePairingAuthorisation(pairingRequest);
+        Whisper.events.trigger(
+          'devicePairingRequestReceived',
+          pairingRequest.secondaryDevicePubKey
+        );
+      }
+      // Ignore requests if the dialog is closed
     }
     return this.removeFromCache(envelope);
   },