Update order of invocation in sendNext: RACReplaySubject

valuesReceived should be cleaned up before sending value.

If we have subscription and creating another subscription on the same RACReplaySubject while -take:1 it - we can get first value instead of second.

Author: Aleksei Minaev

ReactiveObjC/RACReplaySubject.m

@@ -85,11 +85,12 @@ - (RACDisposable *)subscribe:(id<RACSubscriber>)subscriber {
 - (void)sendNext:(id)value {
 	@synchronized (self) {
 		[self.valuesReceived addObject:value ?: RACTupleNil.tupleNil];
-		[super sendNext:value];
 
 		if (self.capacity != RACReplaySubjectUnlimitedCapacity && self.valuesReceived.count > self.capacity) {
 			[self.valuesReceived removeObjectsInRange:NSMakeRange(0, self.valuesReceived.count - self.capacity)];
 		}
+		
+		[super sendNext:value];
 	}
 }