Spreadsheet: Prevent infinite loop in Range ctor

Author: https://github.com/u9g
Commit: b3591d28df
Pull-request: https://github.com/SerenityOS/serenity/pull/12691
Reviewed-by: https://github.com/Smrtnyk
Reviewed-by: https://github.com/alimpfard

Base/res/js/Spreadsheet/runtime.js

@@ -162,6 +162,9 @@ class Ranges {
 
 class Range {
     constructor(startingColumnName, endingColumnName, startingRow, endingRow, columnStep, rowStep) {
+        // using == to account for '0' since js will parse `+'0'` to 0
+        if (columnStep == 0 || rowStep == 0)
+            throw new Error("rowStep or columnStep is 0, this will cause an infinite loop");
         this.startingColumnName = startingColumnName;
         this.endingColumnName = endingColumnName;
         this.startingRow = startingRow;