Merge r9917 into 3.5 branch. This fixes issue 103259.

src/array.js

Index: src/array.js
diff --git a/src/array.js b/src/array.js
index 281c507f5a6d6e83b4dd196e3170a0538950fa33..f73b0c1b98d176ee090091e3cacfe3e3243e2824 100644
--- a/src/array.js
+++ b/src/array.js
@@ -172,12 +172,12 @@ function Join(array, length, separator, convert) {
     } else {
       for (var i = 0; i < length; i++) {
         var e = array[i];
-          if (IS_NUMBER(e)) {
-            e = %_NumberToString(e);
-          } else if (!IS_STRING(e)) {
-            e = convert(e);
-          }
-          elements[i] = e;
+        if (IS_NUMBER(e)) {
+          e = %_NumberToString(e);
+        } else if (!IS_STRING(e)) {
+          e = convert(e);
+        }
+        elements[i] = e;
       }
     }
     var result = %_FastAsciiArrayJoin(elements, separator);