handle case where row nums are the same

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1891777 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 0 insertions, 3 deletions

diff --git a/poi/src/main/java/org/apache/poi/ss/formula/FormulaShifter.java b/poi/src/main/java/org/apache/poi/ss/formula/FormulaShifter.java
index ed2589d754..782063a481 100644
--- a/poi/src/main/java/org/apache/poi/ss/formula/FormulaShifter.java
+++ b/poi/src/main/java/org/apache/poi/ss/formula/FormulaShifter.java
@@ -76,9 +76,6 @@ public final class FormulaShifter {
      */
     private FormulaShifter(int externSheetIndex, String sheetName, int firstMovedIndex, int lastMovedIndex, int amountToMove,
             ShiftMode mode, SpreadsheetVersion version) {
-        if (amountToMove == 0) {
-            throw new IllegalArgumentException("amountToMove must not be zero");
-        }
         if (firstMovedIndex > lastMovedIndex) {
             throw new IllegalArgumentException("firstMovedIndex, lastMovedIndex out of order");
         }