Studio pap module/library scan: return early if library scan count is…

… None before entering monitor loop. Re #155.

Before entering library scan monitor loop, make sure library scan count is not None. This is now done earlier so that nitial library scan reporter can exit early if lib scan count is indeed None and also to ensure that subsequent reference to lib scan count is seen as an integer.

addon/appModules/splstudio/__init__.py

@@ -1696,15 +1696,19 @@ def monitorLibraryScan(self) -> None:
 			self.libraryScanning = False
 			return
 		time.sleep(0.1)
+		# Is library scan count still an integer?
+		libScanCount = splbase.studioAPI(1, 32)
 		if (
-			api.getForegroundObject().windowClassName == "TTrackInsertForm"
-			and self.productVersion in noLibScanMonitor
+			libScanCount is None
+			or (
+				api.getForegroundObject().windowClassName == "TTrackInsertForm"
+				and self.productVersion in noLibScanMonitor
+			)
 		):
 			self.libraryScanning = False
 			return
 		# 17.04: Library scan may have finished while this thread was sleeping.
-		libScanCount = splbase.studioAPI(1, 32)
-		if libScanCount is not None and libScanCount < 0:
+		if libScanCount < 0:
 			self.libraryScanning = False
 			# Translators: Presented when library scanning is finished.
 			ui.message(_("{itemCount} items in the library").format(itemCount=splbase.studioAPI(0, 32)))