UidOwnerValue.java - replace U32 ifindex with S32

These are allocated in order by the kernel, if we go
over 2 billion, we've got other problems... besides
U32 to S32 conversion will work just fine anyway.

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I6e1da81c03bd36d8c6e7bd2b33f535d1fabfad0a
diff --git a/service/src/com/android/server/BpfNetMaps.java b/service/src/com/android/server/BpfNetMaps.java
index 758c013..2796dbe 100644
--- a/service/src/com/android/server/BpfNetMaps.java
+++ b/service/src/com/android/server/BpfNetMaps.java
@@ -413,7 +413,7 @@
         }
     }
 
-    private void addRule(final int uid, final long match, final long iif, final String caller) {
+    private void addRule(final int uid, final long match, final int iif, final String caller) {
         if (match != IIF_MATCH && iif != 0) {
             throw new ServiceSpecificException(EINVAL,
                     "Non-interface match must have zero interface index");