Avoid crash in SendTransactionFragment.

- The crash was happening because the dialog that verifies the automatic time was being created in onResume, so if the user leaved the application while the fragment was showing and returned to it later another multiple dialogs would be created. The first one to be accepted correctly navigates the user back, but the second creates a crash because references a no longer existing fragment. The dialog creation was moved to onViewCreated instead, so that only one dialog is created.

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/SendTransactionFragment.kt

@@ -221,6 +221,8 @@ class SendTransactionFragment : ConnectedFragment(), ZXingScannerView.ResultHand
                 populatePropertiesFromQRCodeString(Invoice.toQrCode(invoice))
             }, 2000) // Wait to let the other elements of the fragment initialize
         }
+
+        verifyGlobalSettingsTimeAutomatic()
     }
 
     /** Handles the selection of items in the Asset spinner, to keep track of the selectedAssetSymbol and show the
@@ -592,7 +594,7 @@ class SendTransactionFragment : ConnectedFragment(), ZXingScannerView.ResultHand
                     title(R.string.title__time_sync_error)
                     message(R.string.msg__time_sync_error)
                     positiveButton(android.R.string.ok) {
-                        this@SendTransactionFragment.findNavController().navigateUp()
+                        findNavController().navigateUp()
                     }
                     cancelable(false)
                     cancelOnTouchOutside(false)
@@ -639,8 +641,6 @@ class SendTransactionFragment : ConnectedFragment(), ZXingScannerView.ResultHand
 
         if (isCameraPreviewVisible)
             startCameraPreview()
-
-        verifyGlobalSettingsTimeAutomatic()
     }
 
     override fun onPause() {