make finals static, remove unused local

found by findbugs
http://b/issue?id=1856725
http://b/issue?id=1856786
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 0bac3ea..155942e 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -290,7 +290,7 @@
         final static String BUILD_INFOS_FILE = "build.prop";
         final static String SYSTEM_BUILD_INFOS_FILE = "/system/"
                               + BUILD_INFOS_FILE;
-        final int BUFSIZE = 4096;
+        final static int BUFSIZE = 4096;
         boolean mDoOverwrite = false;
         String pluginsPath;
         Context mContext;