Config/config cache: move SPL cache definition to the top of the file.

Move config cache dictionary definition to the top of the file to gruop it with other SPL Config variables.
This will be backported to LTS20.

addon/appModules/splstudio/splconfig.py

@@ -32,6 +32,10 @@
 SPLIni = os.path.join(globalVars.appArgs.configPath, "splstudio.ini")
 SPLProfiles = os.path.join(globalVars.appArgs.configPath, "addons", "stationPlaylist", "profiles")
 SPLConfig = None
+# Cache a copy of the loaded config.
+# This comes in handy when saving configuration to disk. For the most part, no change occurs to config.
+# This helps prolong life of a solid-state drive (preventing unnecessary writes).
+_SPLCache = {}
 # The following settings can be changed in profiles:
 _mutatableSettings = ("IntroOutroAlarms", "MicrophoneAlarm", "MetadataStreaming", "ColumnAnnouncement")
 # 7.0: Profile-specific confspec (might be removed once a more optimal way to validate sections is found).
@@ -737,12 +741,6 @@ def initialize():
 		)
 
 
-# Cache a copy of the loaded config.
-# This comes in handy when saving configuration to disk. For the most part, no change occurs to config.
-# This helps prolong life of a solid-state drive (preventing unnecessary writes).
-_SPLCache = {}
-
-
 # Close config database if needed.
 def closeConfig(splComponent):
 	global SPLConfig, _SPLCache