warning fix:

tdfx_vid_test.c: In function ‘main’:
tdfx_vid_test.c:61: warning: incompatible implicit declaration of built-in function ‘memset’


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24282 b3059339-0415-0410-9bf9-f77b7e298cf2

drivers/tdfx_vid_test.c

@@ -1,6 +1,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>