Fix build error in init when building with bootchart

There was a build error in init.c if you enabled bootchart, this
should probably be shipped upstream if not fixed already.

Change-Id: Iea3451c3e15d5cac00c5420d99bfce9a950aaaac
diff --git a/init/init.c b/init/init.c
index 75ffb5c..f2a1d27 100755
--- a/init/init.c
+++ b/init/init.c
@@ -646,6 +646,8 @@
     } else {
         NOTICE("bootcharting ignored\n");
     }
+
+    return 0;
 }
 #endif