IO-2879 Adjust placement of variable

Signed-off-by: Allan Carr <allan.carr@thinkimex.com>

server/accounting/qb-receivables-lines.js

@@ -20,7 +20,6 @@ exports.default = function ({ bodyshop, jobs_by_pk, qbo = false, items, taxCodes
   //Otherwise, calculate them and add them to the default MAPA and MASH centers.
   let hasMapaLine = false;
   let hasMashLine = false;
-  let isTowingLine = false;
 
   //Create the invoice lines mapping.
   jobs_by_pk.joblines.map((jobline) => {
@@ -31,6 +30,9 @@ exports.default = function ({ bodyshop, jobs_by_pk, qbo = false, items, taxCodes
     if (jobline.db_ref === "936007") {
       hasMashLine = true;
     }
+
+    //Check if the line is a Towing Line and flag as such.
+    let isTowingLine = false;
     if (jobline.db_ref === "936001" && jobline.line_desc.includes("Towing")) {
       isTowingLine = true;
     }