wined3d: Don't write past the end of the buffer's conversion_map.
[wine] / dlls / mouse.drv16 /
drwxr-xr-x   ..
-rw-r--r-- 257 Makefile.in
-rw-r--r-- 2194 mouse.c
-rw-r--r-- 262 mouse.drv16.spec
-rw-r--r-- 918 mouse.rc