Fix examples for out of order events

This would be a host bug, but in theory CLAP hosts could provide out of
order events this way.

plugins/examples/poly_mod_synth/src/lib.rs

@@ -199,7 +199,7 @@ impl Plugin for PolyModSynth {
             'events: loop {
                 match next_event {
                     // If the event happens now, then we'll keep processing events
-                    Some(event) if (event.timing() as usize) == block_start => {
+                    Some(event) if (event.timing() as usize) <= block_start => {
                         // This synth doesn't support any of the polyphonic expression events. A
                         // real synth plugin however will want to support those.
                         match event {

plugins/examples/sine/src/lib.rs

@@ -153,7 +153,7 @@ impl Plugin for Sine {
             let sine = if self.params.use_midi.value {
                 // Act on the next MIDI event
                 while let Some(event) = next_event {
-                    if event.timing() != sample_id as u32 {
+                    if event.timing() > sample_id as u32 {
                         break;
                     }