Fix legacy OBB data migration path

Ib64f7eb7608704e1b53a1b923cc068172fe05e1c botched the legacy OBB data
migration path. By doing s/sdcard/data\/media/g instead of
s/sdcard/data\/media\/0/g

Test: Device boots and /data/media/Android dir is not created
Bug: 144547920
Change-Id: I4f43cf1380159da17622512a6ad9d9106bf3143b
diff --git a/cmds/installd/migrate_legacy_obb_data.sh b/cmds/installd/migrate_legacy_obb_data.sh
index 0e6d7b9..7399681 100644
--- a/cmds/installd/migrate_legacy_obb_data.sh
+++ b/cmds/installd/migrate_legacy_obb_data.sh
@@ -15,17 +15,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-rm -rf /data/media/Android/obb/test_probe
-mkdir -p /data/media/Android/obb/
-touch /data/media/Android/obb/test_probe
+rm -rf /data/media/0/Android/obb/test_probe
+mkdir -p /data/media/0/Android/obb/
+touch /data/media/0/Android/obb/test_probe
 if ! test -f /data/media/0/Android/obb/test_probe ; then
   log -p i -t migrate_legacy_obb_data "No support for 'unshared_obb'. Not migrating"
-  rm -rf /data/media/Android/obb/test_probe
+  rm -rf /data/media/0/Android/obb/test_probe
   exit 0
 fi
 
 # Delete the test file, and remove the obb folder if it is empty
-rm -rf /data/media/Android/obb/test_probe
+rm -rf /data/media/0/Android/obb/test_probe
 rmdir /data/media/obb
 
 if ! test -d /data/media/obb ; then