Remove unnecessary allocation+unboxing of objects.

Transforming String->int can be done with 0 allocations
using Integer.parseInt.

bug: 28078871
Change-Id: I8d9f322d7154728849dde61ef282046032858d60
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index e5fe03a..40d44b4 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -1747,7 +1747,7 @@
         if(restoreDefaultNetworkDelayStr != null &&
                 restoreDefaultNetworkDelayStr.length() != 0) {
             try {
-                return Integer.valueOf(restoreDefaultNetworkDelayStr);
+                return Integer.parseInt(restoreDefaultNetworkDelayStr);
             } catch (NumberFormatException e) {
             }
         }