releasetools: Fix an issue in common.GetAvbPartitionArg.

It's a bug introduced in commit 1aeef725a7, which affects unittest only.

Bug: 130351427
Test: Use a lunch'd target. Run
      `atest --host releasetools_test releasetools_py3_test`.
Change-Id: I7ff01a6af47d002e1203bd376d477b60d769cbd1
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index f846b18..031db1d 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -882,7 +882,7 @@
   # boot chain, to be verified with AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION.
   # See details at
   # https://android.googlesource.com/platform/external/avb/+/master/README.md#booting-into-recovery.
-  if OPTIONS.info_dict.get("ab_update") != "true" and partition == "recovery":
+  if info_dict.get("ab_update") != "true" and partition == "recovery":
     return []
 
   # Otherwise chain the partition into vbmeta.