Bump rlzlib version to get fix for crash.

BUG=96640
TEST=No user visible change.

Review URL: http://codereview.chromium.org/7979007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@102315 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -324,7 +324,7 @@ deps_os = {
        Var("nacl_tools_revision")),
 
     "src/rlz":
-      (Var("googlecode_url") % "rlz") + "/trunk@47",
+      (Var("googlecode_url") % "rlz") + "/trunk@48",
 
     # Dependencies used by libjpeg-turbo
     "src/third_party/yasm/binaries":