_www: fix save on null Headers and Vars

If the user does not define the Headers, clicking Run ony any HTTP
Target will result in error when "save" function executed before it.

1 files changed, 8 insertions, 4 deletions

diff --git a/_www/functions.js b/_www/functions.js
index 178690a..c2e0ec6 100644
--- a/_www/functions.js
+++ b/_www/functions.js
@@ -237,11 +237,15 @@ export function save(target, httpTarget, wsTarget) {
     saveTargetOptDuration(target);
     saveTargetOptRatePerSecond(target);
     saveTargetOptTimeout(target);
-    for (const [k, fi] of Object.entries(target.Headers)) {
-        saveTargetHeader(target, k, fi.value);
+    if (target.Headers) {
+        for (const [k, fi] of Object.entries(target.Headers)) {
+            saveTargetHeader(target, k, fi.value);
+        }
     }
-    for (const [k, fi] of Object.entries(target.Vars)) {
-        saveTargetVar(target, k, fi.value);
+    if (target.Vars) {
+        for (const [k, fi] of Object.entries(target.Vars)) {
+            saveTargetVar(target, k, fi.value);
+        }
     }
     if (httpTarget) {
         for (const [k, fi] of Object.entries(httpTarget.Headers)) {