MdePkg: Fix Clang Build Error

[sachinami]

Description

Fixed Clang build error introduced by uninitialized variables in 6278bbb

• Breaking change?
  • Breaking change - Does this PR cause a break in build or boot behavior?
  • Examples: Does it add a new library class or move a module to a different repo.
• Impacts security?
  • Security - Does this PR have a direct security impact?
  • Examples: Crypto algorithm change or buffer overflow fix.
• Includes tests?
  • Tests - Does this PR include any explicit test code?
  • Examples: Unit tests or integration tests.

How This Was Tested

Integration Instructions

N/A

[sachinami]

@ardbiesheuvel Fixed issue introduced in #10617

[mdkinney]

Thanks for the quick fix to this CLANG compatibility issue. I would like to see CLANG added to CI to help catch these types of issues before they are merged.

[ardbiesheuvel]

Thanks for the quick fix to this CLANG compatibility issue. I would like to see CLANG added to CI to help catch these types of issues before they are merged.

Agreed. We could swap out some GCC5 targets with CLANGDWARF so we don't have to increase the overall CI workload.