修改蓝图组卷题源不足时提示信息为空的bug

cqb-gen-paper/src/main/java/com/qmth/cqb/genpaper/service/GenPaperService.java

@@ -621,9 +621,11 @@ public class GenPaperService {
         List<String> quesNames = uc.getUnitStruct().getQuesNames();
         if(quesNames != null && quesNames.size() > 0){
             if(quesNames.contains(question.getQuesName()) && !uc.finish() && uc.getUnitStruct().getQuestionType().name().equals(question.getQuestionType().name())){
-                if(question.getPropertyGroup().contains(uc.getUnitStruct().getPropertyGroup())){
-                	return true;
-                }
+            	if(question.getPropertyGroup() != null){
+            		if(question.getPropertyGroup().contains(uc.getUnitStruct().getPropertyGroup())){
+                    	return true;
+                    }
+            	}
             }
         }
         return false;