replace leading tabs in several files

src/cmd.c

@@ -1245,7 +1245,7 @@ wiz_load_lua(void)
 {
     if (wizard) {
         char buf[BUFSZ];
-	nhl_sandbox_info sbi = {NHL_SB_SAFE, 0, 0, 0};
+        nhl_sandbox_info sbi = {NHL_SB_SAFE, 0, 0, 0};
 
         buf[0] = '\0';
         getlin("Load which lua file?", buf);