wined3d: Don't write past the end of the buffer's conversion_map.
[wine] / dlls / mmdevapi /
drwxr-xr-x   ..
-rw-r--r-- 267 Makefile.in
-rw-r--r-- 4897 alext.h
-rw-r--r-- 37480 devenum.c
-rw-r--r-- 13436 main.c
-rw-r--r-- 10351 mmdevapi.h
-rw-r--r-- 310 mmdevapi.spec
-rw-r--r-- 5388 regsvr.c
drwxr-xr-x - tests