Close a multiprocess file handle.

Bug: 5034192
Change-Id: I9c3d757cfae313e9b7510e167de797a74c74a351

java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java

@@ -107,6 +107,7 @@ public class BinaryDictionaryFileDumper {
         if (null == afd) return null;
         final String fileName =
                 copyFileTo(afd.createInputStream(), getCacheFileNameForLocale(locale, context));
+        afd.close();
         return Arrays.asList(AssetFileAddress.makeFromFileName(fileName));
     }