Uses lazy loading to initialize the system character info reader.

Author: zonble

Source/InputMethodController+CandidateControllerDelegate.swift

@@ -205,11 +205,7 @@ extension McBopomofoInputMethodController: CandidateControllerDelegate {
         }
 
         func checkIfSystemCharacterInfoReady() -> Bool {
-            if charInfo == nil {
-                charInfo = try? SystemCharacterInfo()
-            }
-            let ready = charInfo != nil
-            return ready
+            charInfo != nil
         }
 
         func getSystemExplanation(for chr: String) -> String? {

Source/InputMethodController.swift

@@ -54,7 +54,7 @@ class McBopomofoInputMethodController: IMKInputController {
     var currentClient: Any?
     var keyHandler: KeyHandler = KeyHandler()
     var state: InputState = InputState.Empty()
-    var charInfo: SystemCharacterInfo?
+    lazy var charInfo: SystemCharacterInfo? = try? SystemCharacterInfo()
 
     // MARK: - IMKInputController methods