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py/scheduler: Break out of the c task loop on re-schedule.

Signed-off-by: Andrew Leech <andrew.leech@planetinnovation.com.au>

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Lines changed: 4 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -88,11 +88,14 @@ static inline void mp_sched_run_pending(void) {`
`88`	`88`
`89`	`89`	`#ifMICROPY_SCHEDULER_STATIC_NODES`
`90`	`90`	`// Run all pending C callbacks.`
`91`		`-while (MP_STATE_VM(sched_head)!=NULL) {`
	`91`	`+boolpass_finished= false;`
	`92`	`+while (MP_STATE_VM(sched_head)!=NULL&& !pass_finished) {`
`92`	`93`	`mp_sched_node_t*node=MP_STATE_VM(sched_head);`
`93`	`94`	`MP_STATE_VM(sched_head)=node->next;`
`94`	`95`	`if (MP_STATE_VM(sched_head)==NULL) {`
`95`	`96`	`MP_STATE_VM(sched_tail)=NULL;`
	`97`	`+// ensure we exit even if a task re-scheduled in callback() below.`
	`98`	`+pass_finished= true;`
`96`	`99`	`}`
`97`	`100`	`mp_sched_callback_tcallback=node->callback;`
`98`	`101`	`node->callback=NULL;`

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