修复精准组卷bug

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

@@ -95,10 +95,12 @@ public class GenPaperService {
         }
         List<PaperDetail> paperDetails = new ArrayList<PaperDetail>();
         List<PaperDetailUnit> paperDetailunits = new ArrayList<PaperDetailUnit>();
+        Iterator iterator = quesSet.iterator();
+
         for (DetailContext dc : detailContexts) {
             List<PaperDetailUnit> unitsTemp = new ArrayList<PaperDetailUnit>();
             List<UnitContext> units = dc.getUnits();
-            Iterator iterator = quesSet.iterator();
+
             while(iterator.hasNext()) {
                 Question ques = (Question) iterator.next();
                 for (UnitContext uc : units) {