Metadata streaming: move early metadata announcer timer definition to…

… above announcer internal function.

Define early metadata announcer before it is used anywhere.
This will be backported to LTS20.

addon/appModules/splstudio/splmisc.py

@@ -451,6 +451,10 @@ def metadataStatus():
 			return _("Metadata streaming configured for URL's {URL}").format(URL=urls)
 
 
+# Handle a case where instant profile ssitch occurs twice within the switch time-out.
+_earlyMetadataAnnouncer = None
+
+
 # Internal metadata status announcer.
 # The idea is to pause for a while and announce the status message and playing the accompanying wave file.
 # This is necessary in order to allow extension points to work correctly
@@ -466,10 +470,6 @@ def _metadataAnnouncerInternal(status, startup=False):
 	_earlyMetadataAnnouncer = None
 
 
-# Handle a case where instant profile ssitch occurs twice within the switch time-out.
-_earlyMetadataAnnouncer = None
-
-
 def _earlyMetadataAnnouncerInternal(status, startup=False):
 	global _earlyMetadataAnnouncer
 	if _earlyMetadataAnnouncer is not None: