Use char x[] rather than char x[0].

Bug: 15514223
Change-Id: I895ea8ef7e391fd14cdf8976e048385e01c90f8f
diff --git a/include/media/mediascanner.h b/include/media/mediascanner.h
index a7bb6c1..37a83c6 100644
--- a/include/media/mediascanner.h
+++ b/include/media/mediascanner.h
@@ -59,7 +59,7 @@
 
 private:
     int32_t mSize;
-    char mData[0];
+    char mData[];
 
     // You can't construct instances of this class directly because this is a
     // variable-sized object passed through the binder.