修复IMLoginManager的userInfo可能为空的问题

common/src/main/java/com/yunbao/common/manager/IMLoginManager.java

@@ -271,7 +271,7 @@ public class IMLoginManager extends BaseCacheManager {
                     .execute(new HttpCallback() {
                         @Override
                         public void onSuccess(int code, String msg, String[] info) {
-                            if (info.length > 0) {
+                            if (info.length > 0 && userInfo != null) {
                                 if ("1".equals(info[0])) {
                                     userInfo.setIsAdmin("1");
                                     InstructorRemarkManager.get(context).getNetInstructorRemark();