Minor cleanup of #2595 test code (#2596)

* fix race condition in `MapMerge` duplicate handling under `fork-join`

* test cleanup

Author: GuntherRademacher

basex-core/src/test/java/org/basex/query/func/XQueryModuleTest.java

@@ -153,24 +153,23 @@ public final class XQueryModuleTest extends SandboxTest {
     query(func.args(" (true#0, false#0)", " { 'parallel': <_>1</_> }"), "true\nfalse");
 
     // MapMerge mutable instance variables
-    query("xquery:fork-join(\r\n"
-        + "  for $t in 1 to 100\r\n"
-        + "  return function() {\r\n"
-        + "    for $i in 1 to 10\r\n"
-        + "    let $v := map:build(\r\n"
-        + "      ($i, $i),\r\n"
-        + "      (),\r\n"
-        + "      (),\r\n"
-        + "      { 'duplicates': function($x, $y) { $x * $y } }\r\n"
-        + "    )($i)\r\n"
-        + "    return\r\n"
-        + "      if($v eq $i * $i) then\r\n"
-        + "        $v\r\n"
-        + "      else\r\n"
-        + "        error(xs:QName('err:FAIL'), `{$i}: expected {$i * $i}, but got {$v}`)\r\n"
-        + "  }\r\n"
-        + ")\r\n"
-        + "=> count()", 1000);
+    query(func.args(
+          " for $t in 1 to 100\n"
+        + " return function() {\n"
+        + "   for $i in 1 to 10\n"
+        + "   let $v := map:build(\n"
+        + "     ($i, $i),\n"
+        + "     (),\n"
+        + "     (),\n"
+        + "     { 'duplicates': function($x, $y) { $x * $y } }\n"
+        + "   )($i)\n"
+        + "   return\n"
+        + "     if($v eq $i * $i) then\n"
+        + "       $v\n"
+        + "     else\n"
+        + "       error(xs:QName('err:FAIL'), `{$i}: expected {$i * $i}, but got {$v}`)\n"
+        + " }")
+        + " => count()", 1000);
 
     // optimizations
     check(func.args(" ()"), "", empty());