PVS-Studio warning V532 for Apache

apr_status_t
iconv_uc_conv(..., apr_size_t *res)
{
  ...
  if (size)
    *res ++;
  ...
}

This is what should have been written here: (*res)++;

This suspicious code was found in Apache project by PVS-Studio static code analyzer.
Warning message is:
V532 Consider inspecting the statement of '*pointer++' pattern. Probably meant: '(*pointer)++'. apriconv iconv_uc.c 114

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/