This patch tried to fix following build failure when linking the Brotli decompress lib.
 
Steps to replicate the issue:
1 - Attach a NULL lib to DxeIpl.inf in any project's .DSC, say OvmfPkgX64.dsc
  MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf {
    <LibraryClasses>
      NULL|MdeModulePkg/Library/BrotliCustomDecompressLib/BrotliCustomDecompressLib.inf
  }
2 - Follow the EDKII'2 package build steps to build that project. Build.py would compliain with following errors.
...

/home/edk2/edk2-stable202211/MdeModulePkg/Library/BrotliCustomDecompressLib/brotli/c/dec/decode.c:879: undefined reference to `_kBrotliPrefixCodeRanges'

/usr/bin/ld: /home/edk2/edk2-stable202211/MdeModulePkg/Library/BrotliCustomDecompressLib/brotli/c/dec/decode.c:1193: undefined reference to `_kBrotliContextLookupTable'

/usr/bin/ld: /tmp/ccKzzHN0.ltrans0.ltrans.o: in function `DecodeCommandBlockSwitch':

...

/usr/bin/ld: /tmp/ccKzzHN0.ltrans0.ltrans.o: in function `BrotliUefiDecompress':

/home/edk2/edk2-stable202211/MdeModulePkg/Library/BrotliCustomDecompressLib/brotli/c/dec/decode.c:898: undefined reference to `_kBrotliPrefixCodeRanges'

/usr/bin/ld: /home/edk2/edk2-stable202211/MdeModulePkg/Library/BrotliCustomDecompressLib/brotli/c/dec/decode.c:1193: undefined reference to `_kBrotliContextLookupTable'

--
Timothy