Fix trivial coding standard issue

libs/libc/misc/lib_crc32.c

@@ -106,6 +106,7 @@ uint32_t crc32part(FAR const uint8_t *src, size_t len, uint32_t crc32val)
     {
       crc32val = crc32_tab[(crc32val & 0xff) ^ src[i]] ^ (crc32val >> 8);
     }
+
   return crc32val;
 }