Check ESPIPE

Author: julek-wolfssl

src/ssl_misc.c

@@ -230,12 +230,14 @@ static int wolfssl_file_len(XFILE fp, long* fileSz)
         /* Get file offset at end of file. */
         curr = (long)XFTELL(fp);
         if (curr < 0) {
+#ifdef ESPIPE
             if (errno == ESPIPE) {
                 WOLFSSL_ERROR_MSG("wolfssl_file_len: file is a pipe");
                 *fileSz = 0;
                 ret = WOLFSSL_BAD_FILETYPE;
             }
             else
+#endif
                 ret = WOLFSSL_BAD_FILE;
         }
     }