added checks to fix crash

navi-chat/src/main/java/com/navi/chat/provider/firestore/FireStoreDataProvider.kt

@@ -47,27 +47,35 @@ class FireStoreDataProvider @Inject constructor(
     }
 
     override fun listenToLiveMessages(senderName: String, latestMessageTimeStamp: Timestamp?) {
-        chatFireStoreDatabase.listenToFirestoreChanges(
-            path = fireStoreDataProviderModel.readPath,
-            latestMessageTimeStamp = latestMessageTimeStamp,
-            messageOperation = messageOperation
-        )
+        if (::chatFireStoreDatabase.isInitialized) {
+            chatFireStoreDatabase.listenToFirestoreChanges(
+                path = fireStoreDataProviderModel.readPath,
+                latestMessageTimeStamp = latestMessageTimeStamp,
+                messageOperation = messageOperation
+            )
+        }
     }
 
     override fun writeMessage(naviChatWidget: NaviChatWidget) {
-        chatFireStoreDatabase.writeToFireStore(
-            path = fireStoreDataProviderModel.writePath,
-            naviChatWidget = naviChatWidget,
-            messageOperation = messageOperation
-        )
+        if (::chatFireStoreDatabase.isInitialized) {
+            chatFireStoreDatabase.writeToFireStore(
+                path = fireStoreDataProviderModel.writePath,
+                naviChatWidget = naviChatWidget,
+                messageOperation = messageOperation
+            )
+        }
     }
 
     fun removeFirestoreListener() {
-        chatFireStoreDatabase.removeFireStoreListener()
+        if (::chatFireStoreDatabase.isInitialized) {
+            chatFireStoreDatabase.removeFireStoreListener()
+        }
     }
 
     @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
     fun onDestroy() {
-        chatFireStoreDatabase.removeFireStoreListener()
+        if (::chatFireStoreDatabase.isInitialized) {
+            chatFireStoreDatabase.removeFireStoreListener()
+        }
     }
 }