_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.ts b/_www/functions.ts
index a0ec997..e5d2cf3 100644
--- a/_www/functions.ts
+++ b/_www/functions.ts
@@ -318,11 +318,15 @@ export function save(
   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)) {