MS_ERRORFILE stderr/stdout - only first error reported

[warmerdam]

When MS_ERRORFILE is set to seterr or stdout only the first error message
actually gets reported.  This is because the following code segment ends
up fclose()ing stderr or stdout after their first use. 

  if(errfile) {
    if(strcmp(errfile, "stderr") == 0)
      errstream = stderr;
    else if(strcmp(errfile, "stdout") == 0)
      errstream = stdout;
    else
      errstream = fopen(errfile, "a");
    if(!errstream) return;
    errtime = time(NULL);
    fprintf(errstream, "%s - %s: %s %s\n", chop(ctime(&errtime)),
ms_error->routine, ms_errorCodes[ms_error->code], ms_error->message);
    fclose(errstream);
  }

The correction is to change the fclose() line to:

      if( errstream != stderr && errstream != stdout )
        fclose(errstream);

[fwarmerdam]

Patch applied in 4.99 and 4.10.x branch.