[workflows] Fix argument passing in abi-dump jobs (llvm#79658)

This was broken by 859e6aa, which added
quotes around the EXTRA_ARGS variable.

.github/workflows/llvm-tests.yml

@@ -125,7 +125,7 @@ jobs:
           else
             touch llvm.symbols
           fi
-          abi-dumper "$EXTRA_ARGS" -lver ${{ matrix.ref }} -skip-cxx -public-headers ./install/include/${{ needs.abi-dump-setup.outputs.ABI_HEADERS }} -o ${{ matrix.ref }}.abi ./install/lib/libLLVM.so
+          abi-dumper $EXTRA_ARGS -lver ${{ matrix.ref }} -skip-cxx -public-headers ./install/include/${{ needs.abi-dump-setup.outputs.ABI_HEADERS }} -o ${{ matrix.ref }}.abi ./install/lib/libLLVM.so
           # Remove symbol versioning from dumps, so we can compare across major versions.
           sed -i 's/LLVM_${{ matrix.llvm_version_major }}/LLVM_NOVERSION/' ${{ matrix.ref }}.abi
       - name: Upload ABI file
@@ -175,7 +175,7 @@ jobs:
           # FIXME: Reading of gzip'd abi files on the GitHub runners stop
           # working some time in March of 2021, likely due to a change in the
           # runner's environment.
-          abi-compliance-checker "$EXTRA_ARGS" -l libLLVM.so -old build-baseline/*.abi -new build-latest/*.abi || test "${{ needs.abi-dump-setup.outputs.ABI_HEADERS }}" = "llvm-c"
+          abi-compliance-checker $EXTRA_ARGS -l libLLVM.so -old build-baseline/*.abi -new build-latest/*.abi || test "${{ needs.abi-dump-setup.outputs.ABI_HEADERS }}" = "llvm-c"
       - name: Upload ABI Comparison
         if: always()
         uses: actions/upload-artifact@v3