🔨 修复 getRelativeRowIndex 转换int 可能会导致的空指针异常

easyexcel-core/src/main/java/com/alibaba/excel/write/style/row/AbstractRowHeightStyleStrategy.java

@@ -29,7 +29,7 @@ public abstract class AbstractRowHeightStyleStrategy implements RowWriteHandler
      * @param row
      * @param relativeRowIndex
      */
-    protected abstract void setHeadColumnHeight(Row row, int relativeRowIndex);
+    protected abstract void setHeadColumnHeight(Row row, Integer relativeRowIndex);
 
     /**
      * Sets the height of content
@@ -37,6 +37,6 @@ public abstract class AbstractRowHeightStyleStrategy implements RowWriteHandler
      * @param row
      * @param relativeRowIndex
      */
-    protected abstract void setContentColumnHeight(Row row, int relativeRowIndex);
+    protected abstract void setContentColumnHeight(Row row, Integer relativeRowIndex);
 
 }

easyexcel-core/src/main/java/com/alibaba/excel/write/style/row/SimpleRowHeightStyleStrategy.java

@@ -17,14 +17,14 @@ public class SimpleRowHeightStyleStrategy extends AbstractRowHeightStyleStrategy
     }
 
     @Override
-    protected void setHeadColumnHeight(Row row, int relativeRowIndex) {
+    protected void setHeadColumnHeight(Row row, Integer relativeRowIndex) {
         if (headRowHeight != null) {
             row.setHeightInPoints(headRowHeight);
         }
     }
 
     @Override
-    protected void setContentColumnHeight(Row row, int relativeRowIndex) {
+    protected void setContentColumnHeight(Row row, Integer relativeRowIndex) {
         if (contentRowHeight != null) {
             row.setHeightInPoints(contentRowHeight);
         }