Cosmetic ucore_bcd changes

src/ucore_bcd.c

@@ -42,10 +42,8 @@ uc_bcd2ascii(const unsigned char *bcd, size_t bcdlen, char *asciiout)
     size_t idx = 0;
 
     for (i = 0; i < bcdlen; i++) {
-       asciiout[idx] = hex[bcd[i] & 0xf];
-       idx++;
-       asciiout[idx] = hex[(bcd[i] & 0xf0) >> 4];
-       idx++;
+       asciiout[idx++] = hex[bcd[i] & 0xf];
+       asciiout[idx++] = hex[(bcd[i] & 0xf0) >> 4];
     }
 
     asciiout[idx] = 0;