An unused variable in combination treating warnings as errors causes a compilation failure.

... jdk/src/java.desktop/share/native/libfontmanager/freetypeScaler.c(106) : error C2220: warning treated as error - no 'object' file generated
.... /jdk/src/java.desktop/share/native/libfontmanager/freetypeScaler.c(106) : warning C4101: 'stream' : unreferenced local variable