clarify comment

Author: realFlowControl

ext/opcache/jit/zend_jit.c

@@ -791,7 +791,7 @@ ZEND_EXT_API void zend_jit_status(zval *ret)
 	add_assoc_long(&stats, "kind", JIT_G(trigger));
 	add_assoc_long(&stats, "opt_level", JIT_G(opt_level));
 	add_assoc_long(&stats, "opt_flags", JIT_G(opt_flags));
-	if (dasm_buf && dasm_end && dasm_ptr) {
+	if (dasm_buf) {
 		add_assoc_long(&stats, "buffer_size", (char*)dasm_end - (char*)dasm_buf);
 		add_assoc_long(&stats, "buffer_free", (char*)dasm_end - (char*)*dasm_ptr);
 	} else {
@@ -5088,7 +5088,9 @@ ZEND_EXT_API void zend_jit_shutdown(void)
 	zend_jit_trace_free_caches(&jit_globals);
 #endif
 
-	// Reset global pointers to prevent use-after-free in Apache reload
+	/* Reset global pointers to prevent use-after-free in `zend_jit_status()`
+	 * after gracefully restarting Apache with mod_php, see:
+	 * https://github.com/php/php-src/pull/19212 */
 	dasm_ptr = NULL;
 	dasm_buf = NULL;
 	dasm_end = NULL;