desktop: Set max_execution_duration to Infinity by default

The `max_execution_duration` feature is pretty much useless on desktop,
and breaks slow SWFs by aborting script execution instead of letting
it continue.

desktop/src/cli.rs

@@ -44,7 +44,7 @@ pub struct Opt {
     pub height: Option<f64>,
 
     /// Maximum number of seconds a script can run before scripting is disabled.
-    #[clap(long, short, default_value = "15.0")]
+    #[clap(long, short, default_value = "Infinity")]
     pub max_execution_duration: f64,
 
     /// Base directory or URL used to resolve all relative path statements in the SWF file.

desktop/src/player.rs

@@ -129,6 +129,12 @@ impl ActivePlayer {
                 builder.with_external_interface(Box::<DesktopExternalInterfaceProvider>::default());
         }
 
+        let max_execution_duration = if opt.max_execution_duration == f64::INFINITY {
+            Duration::MAX
+        } else {
+            Duration::from_secs_f64(opt.max_execution_duration)
+        };
+
         builder = builder
             .with_navigator(navigator)
             .with_renderer(renderer)
@@ -139,7 +145,7 @@ impl ActivePlayer {
             )
             .with_autoplay(true)
             .with_letterbox(opt.letterbox)
-            .with_max_execution_duration(Duration::from_secs_f64(opt.max_execution_duration))
+            .with_max_execution_duration(max_execution_duration)
             .with_quality(opt.quality)
             .with_warn_on_unsupported_content(opt.warn_on_unsupported_content)
             .with_align(opt.align, opt.force_align)