Only call wininet callbacks if dwContext is non-zero.
[wine] / dlls / winspool /
drwxr-xr-x   ..
-rw-r--r-- 70 .cvsignore
-rw-r--r-- 319 Makefile.in
-rw-r--r-- 111998 info.c
drwxr-xr-x - tests
-rw-r--r-- 4779 winspool.drv.spec
-rw-r--r-- 1506 wspool.c