bpo-36333, bpo-36356: Fix _PyEval_FiniThreads() (GH-12432)

bpo-36333, bpo-36356: Fix _PyEval_FiniThreads() (GH-12432) · python/cpython@a712679

Original file line number	Diff line number	Diff line change
`@@ -169,8 +169,10 @@ PyEval_ThreadsInitialized(void)`
`169`	`169`	`void`
`170`	`170`	`PyEval_InitThreads(void)`
`171`	`171`	`{`
`172`		`-if (gil_created())`
	`172`	`+if (gil_created()) {`
`173`	`173`	`return;`
	`174`	`+ }`
	`175`	`+`
`174`	`176`	`PyThread_init_thread();`
`175`	`177`	`create_gil();`
`176`	`178`	`take_gil(_PyThreadState_GET());`
`@@ -184,10 +186,17 @@ PyEval_InitThreads(void)`
`184`	`186`	`void`
`185`	`187`	`_PyEval_FiniThreads(void)`
`186`	`188`	`{`
`187`		`-if (!gil_created())`
	`189`	`+if (!gil_created()) {`
`188`	`190`	`return;`
	`191`	`+ }`
	`192`	`+`
`189`	`193`	`destroy_gil();`
`190`	`194`	`assert(!gil_created());`
	`195`	`+`
	`196`	`+if (_PyRuntime.ceval.pending.lock != NULL) {`
	`197`	`+PyThread_free_lock(_PyRuntime.ceval.pending.lock);`
	`198`	`+_PyRuntime.ceval.pending.lock = NULL;`
	`199`	`+ }`
`191`	`200`	`}`
`192`	`201`
`193`	`202`	`void`