Reduce the compiled binary size.

.github/workflows/main.yml

@@ -153,7 +153,7 @@ jobs:
       env:
         CFLAGS: /Zi
         CXXFLAGS: /Zi
-        LDFLAGS: /DEBUG
+        LDFLAGS: /DEBUG:FULL /OPT:REF /OPT:ICF
       run: cmake -Bbuild -Smegasource -T v142 -A ${{ matrix.platform }} --install-prefix %CD%\install -DCMAKE_PDB_OUTPUT_DIRECTORY=%CD%\pdb ${{ steps.vars.outputs.moredef }}
     - name: Install
       run: cmake --build build --target PACKAGE --config Release -j2