Adding missing queue test.

The test wasn’t running because wasn’t prefixed with `test`.

//FREEBIE

Signal/test/util/QueueTest.m

@@ -1,10 +1,10 @@
-#import "QueueTest.h"
 #import "Queue.h"
+#import "QueueTest.h"
 #import "TestUtil.h"
 
 @implementation QueueTest
 
--(void) queueTest {
+- (void)testQueue {
     Queue *q = [Queue new];
     test(q.count == 0);
     testThrows(q.peek);