Fix a memory leak in `components/script/script_runtime.rs` and add more leak suppressions (#33175)

* asan: Add suppression for known false positive

Signed-off-by: ede1998 <online@erik-hennig.me>

* fix: re-suppress lazy_static leaks

lazy_static is still used by dependencies and still leaks
from static variables.

Signed-off-by: ede1998 <online@erik-hennig.me>

* fix: Memory leak of Box<NetworkingTaskSource>

Signed-off-by: ede1998 <online@erik-hennig.me>

---------

Signed-off-by: ede1998 <online@erik-hennig.me>

1 files changed, 6 insertions, 2 deletions

diff --git a/components/script/script_runtime.rs b/components/script/script_runtime.rs
index bc1f8f7e1bc..3f9cdf8a1bb 100644
--- a/components/script/script_runtime.rs
+++ b/components/script/script_runtime.rs
@@ -444,6 +444,7 @@ pub struct Runtime {
     rt: RustRuntime,
     pub microtask_queue: Rc<MicrotaskQueue>,
     job_queue: *mut JobQueue,
+    networking_task_src: Option<Box<NetworkingTaskSource>>,
 }
 
 impl Drop for Runtime {
@@ -561,12 +562,13 @@ unsafe fn new_rt_and_cx_with_parent(
         networking_task_src.queue_unconditionally(task).is_ok()
     }
 
+    let mut networking_task_src_ptr = std::ptr::null_mut();
     if let Some(source) = networking_task_source {
-        let networking_task_src = Box::new(source);
+        networking_task_src_ptr = Box::into_raw(Box::new(source));
         InitDispatchToEventLoop(
             cx,
             Some(dispatch_to_event_loop),
-            Box::into_raw(networking_task_src) as *mut c_void,
+            networking_task_src_ptr as *mut c_void,
         );
     }
 
@@ -721,6 +723,8 @@ unsafe fn new_rt_and_cx_with_parent(
         rt: runtime,
         microtask_queue,
         job_queue,
+        networking_task_src: (!networking_task_src_ptr.is_null())
+            .then(|| Box::from_raw(networking_task_src_ptr)),
     }
 }