librecovery_updater_msm: Properly free allocated memory

Free updater ReadArgs allocated memory.

CRs-Fixed: 553376
Change-Id: Id92723a51a82830b8ba845df96a246a5708c7c3c
Merge "librecovery_updater_msm: Properly free allocated memory"
Merge "Merge "librecovery_updater_msm: Properly free allocated memory""
Merge a103df6908ec44f43c6ee2effad0cfebb12571fd on remote branch

Change-Id: I5725ef5f7abae3bd3f6d53edde2723e1bbedea7b
Merge "Merge a103df6908ec44f43c6ee2effad0cfebb12571fd on remote branch"