nandroid/root/extendedcommands: attenuate for /data not being auto in fstab

Change-Id: I0e7bec03bb29f1ae72f23321f89cf704e54ff4d9
diff --git a/extendedcommands.c b/extendedcommands.c
index 44e7117..729778c 100644
--- a/extendedcommands.c
+++ b/extendedcommands.c
@@ -453,6 +453,9 @@
         LOGE("unknown volume \"%s\"\n", path);
         return -1;
     }
+    if (strstr(path, "/data") == path && volume_for_path("/sdcard") == NULL && is_data_media()) {
+        return format_unknown_device(NULL, path, NULL);
+    }
     if (strcmp(fs_type, "ramdisk") == 0) {
         // you can't format the ramdisk.
         LOGE("can't format_volume \"%s\"", path);