[history] Added .tryDecref{} as opposite operation for .tryIncref{}

src/commonMain/kotlin/ru/landrafhomyak/utility/reference_counter/CloseableReferenceCounter.kt

@@ -33,6 +33,11 @@ internal class CloseableReferenceCounter(private val _errMessage: String) {
 		this._value.update(Long::dec)
 	}
 
+	inline fun <R> tryDecref(block: () -> R): R {
+		this.checkNotClosed()
+		return safeAutoClose2(onSuccess = this::decref, action = block)
+	}
+
 	fun close(errExistRefs: String) {
 		val state = this._value.compareAndExchange(0, -1)
 		when {