[공통][Bug] 로딩 null 에러 수정

app/src/main/java/kr/co/zumo/app/lifeplus/view/animation/LoadingDriver.java

@@ -88,10 +88,18 @@ public class LoadingDriver {
   }
 
   private void removeInternal() {
-    disposable = null;
+    if (null != disposable) {
+      disposable.dispose();
+      disposable = null;
+    }
+
     loadingCount = 0;
-    waiter.hide();
-    waiter = null;
+
+    if (null != waiter) {
+      waiter.hide();
+      waiter = null;
+    }
+
     Log.d("APP# LoadingDriver | remove", "|" + " ------------- removed!! " + loadingCount);
   }