winhttp: Added winhttp.dll.
diff --git a/configure.ac b/configure.ac
index 8687171..9a1ec62 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1825,6 +1825,7 @@
 AC_CONFIG_FILES([dlls/winequartz.drv/Makefile])
 AC_CONFIG_FILES([dlls/winex11.drv/Makefile])
 AC_CONFIG_FILES([dlls/wing32/Makefile])
+AC_CONFIG_FILES([dlls/winhttp/Makefile])
 AC_CONFIG_FILES([dlls/wininet/Makefile])
 AC_CONFIG_FILES([dlls/wininet/tests/Makefile])
 AC_CONFIG_FILES([dlls/winmm/Makefile])