Reproduce pause/cancel bug when chained with then/success/catch.

Author: inamiy

SwiftTaskTests/RetainCycleTests.swift

@@ -90,10 +90,10 @@ class RetainCycleTests: _TestCase
 
         }
 
-        self.wait {
-            XCTAssertNil(self.task)
-            XCTAssertNil(self.player)
-        }
+        self.wait()
+        
+        XCTAssertNil(self.task)
+        XCTAssertNil(self.player)
     }
 
     func testPlayer_completionAsArgument_configured()
@@ -136,10 +136,10 @@ class RetainCycleTests: _TestCase
 
         }
 
-        self.wait {
-            XCTAssertNil(self.task)
-            XCTAssertNil(self.player)
-        }
+        self.wait()
+        
+        XCTAssertNil(self.task)
+        XCTAssertNil(self.player)
     }
 
     func testPlayer_completionAsStoredProperty_notConfigured()
@@ -178,10 +178,10 @@ class RetainCycleTests: _TestCase
 
         }
 
-        self.wait {
-            XCTAssertNil(self.task)
-            XCTAssertNil(self.player)
-        }
+        self.wait()
+        
+        XCTAssertNil(self.task)
+        XCTAssertNil(self.player)
     }
 
     func testPlayer_completionAsStoredProperty_configured()
@@ -222,9 +222,9 @@ class RetainCycleTests: _TestCase
 
         }
 
-        self.wait {
-            XCTAssertNil(self.task)
-            XCTAssertNil(self.player)
-        }
+        self.wait()
+    
+        XCTAssertNil(self.task)
+        XCTAssertNil(self.player)
     }
 }