Fix comparison of boxed Long with Integer.

Found by Error Prone.
Bug: 27723540

Change-Id: I30e7c0e4be663d181f55aaccde0e834c13ed5904
diff --git a/transition/ics/android/support/transition/TransitionPort.java b/transition/ics/android/support/transition/TransitionPort.java
index 89643c7..d9c2e10 100644
--- a/transition/ics/android/support/transition/TransitionPort.java
+++ b/transition/ics/android/support/transition/TransitionPort.java
@@ -364,7 +364,7 @@
      * views are ignored and only the ids are used).
      */
     boolean isValidTarget(View target, long targetId) {
-        if (mTargetIdExcludes != null && mTargetIdExcludes.contains(targetId)) {
+        if (mTargetIdExcludes != null && mTargetIdExcludes.contains((int)targetId)) {
             return false;
         }
         if (mTargetExcludes != null && mTargetExcludes.contains(target)) {