Typo fixes.

#ifdef ENABLE_CURLX_PRINTF

/* If this define is set, we define all "standard" printf() functions to use

   the curlx_* version instead. It makes the source code transparant and

   the curlx_* version instead. It makes the source code transparent and

   easier to understand/patch. Undefine them first in case _MPRINTF_REPLACE

   is set. */

# undef printf

 * to implement string conversion to our curl_off_t integral data type.

 *

 * Notice that curl_off_t might be 64 or 32 bit wide, and that it might use

 * an undelying data type which might be 'long', 'int64_t', 'long long' or

 * an underlying data type which might be 'long', 'int64_t', 'long long' or

 * '__int64' and more remotely other data types.

 *

 * On systems where the size of curl_off_t is greater than the size of 'long'

 * the conversion funtion to use is strtoll() if it is available, otherwise,

 * the conversion function to use is strtoll() if it is available, otherwise,

 * we emulate its functionality with our own clone.

 *

 * On systems where the size of curl_off_t is smaller or equal than the size

 * of 'long' the conversion funtion to use is strtol().

 * of 'long' the conversion function to use is strtol().

 */

#if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)