Don't use old_spacing-1 if old_spacing already has the minimum value.
[wine] / dlls / ctl3d /
drwxr-xr-x   ..
-rw-r--r-- 87 .cvsignore
-rw-r--r-- 304 Makefile.in
-rw-r--r-- 2255 ctl3d.c
-rw-r--r-- 1155 ctl3d.spec
-rw-r--r-- 2129 ctl3d32.c
-rw-r--r-- 1078 ctl3d32.spec
-rw-r--r-- 1155 ctl3dv2.spec