✨ 싱글톤 객체 반환 함수 동일성 보장

Co-authored-by: bngsh <[email protected]>

Author: yonghanJu

runningdata/src/main/java/com/whyranoid/runningdata/RunningDataManager.kt

@@ -111,6 +111,7 @@ class RunningDataManager {
     companion object {
         private var INSTANCE: RunningDataManager? = null
 
+        @Synchronized
         fun getInstance(): RunningDataManager {
             return INSTANCE ?: RunningDataManager().also {
                 INSTANCE = it