Do KeyOperations on the global thread.

SignalServiceKit/src/Account/PreKeyRefreshOperation.swift

@@ -36,6 +36,8 @@ public class RefreshPreKeysOperation: OWSOperation {
             return
         }
         
+        // Loki: Doing this on the global queue because they do it at the bottom
+        DispatchQueue.global().async {
             guard self.primaryStorage.currentSignedPrekeyId() == nil else {
                 Logger.debug("Already have a signed prekey set")
                 self.reportSuccess()
@@ -52,6 +54,7 @@ public class RefreshPreKeysOperation: OWSOperation {
             
             Logger.debug("done")
             self.reportSuccess()
+        }
         
         /* Loki: Original Code
          * =============

SignalServiceKit/src/Account/RotateSignedKeyOperation.swift

@@ -27,6 +27,8 @@ public class RotateSignedPreKeyOperation: OWSOperation {
             return
         }
         
+        // Loki: Doing this on the global queue because they do it at the bottom
+        DispatchQueue.global().async {
             let signedPreKeyRecord = self.primaryStorage.generateRandomSignedRecord()
             signedPreKeyRecord.markAsAcceptedByService()
             self.primaryStorage.storeSignedPreKey(signedPreKeyRecord.id, signedPreKeyRecord: signedPreKeyRecord)
@@ -37,6 +39,7 @@ public class RotateSignedPreKeyOperation: OWSOperation {
             
             Logger.debug("done")
             self.reportSuccess()
+        }
 
         /* Loki: Original Code
          * =========