Add #include string.h to get prototypes.

games/snake/snake/move.c

@@ -96,6 +96,7 @@ static char sccsid[] = "@(#)move.c	8.1 (Berkeley) 7/19/93";
 #else
 #include <varargs.h>
 #endif
+#include <string.h>
 #include "snake.h"
 
 int CMlength;

games/snake/snscore/snscore.c

@@ -45,6 +45,7 @@ static char sccsid[] = "@(#)snscore.c	8.1 (Berkeley) 7/19/93";
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "pathnames.h"
 
 char *recfile = _PATH_RAWSCORES;

games/wump/wump.c

@@ -55,6 +55,7 @@ static char sccsid[] = "@(#)wump.c	8.1 (Berkeley) 5/31/93";
 #include <sys/file.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "pathnames.h"
 
 /* some defines to spec out what our wumpus cave should look like */