msdos warning bit

../sys/msdos/font.c: In function 'load_font':
../sys/msdos/font.c:89:22: warning: unused variable 'j' [-Wunused-variable]
   89 |             unsigned j;
      |                      ^

sys/msdos/font.c

@@ -86,7 +86,7 @@ load_font(const char *filename)
         bufsize = 0;
         i = 0;
         while (i < length) {
-            unsigned j;
+            /* unsigned j; */
 
             size = fread(buf + bufsize, 1, sizeof(buf) - bufsize, fp);
             if (ferror(fp)) goto error;