content-disposition parsing incorrect

Following patch fixes inline images with content dispositions sent
from Netscape 4.5.  The mime header was:

    Content-Type: image/gif;
     name="foo.gif"
    Content-Transfer-Encoding: base64
    Content-Disposition: inline;
     filename="foo.gif"

The ";" was deleted in the original code.  I changed it to replace
it with a space.

Rob
----------------------------------------------------------------
Index: readmail.pl
===================================================================
retrieving revision 1.1
retrieving revision 1.2
diff -c -r1.1 -r1.2
*** readmail.pl 1999/04/04 03:29:41     1.1
--- readmail.pl 1999/04/12 19:25:32     1.2
***************
*** 690,696 ****
  
      if ($_ = $hfields{'content-disposition'}) {
        ($disp)     = /^\s*(\S+)/;
!       $disp       =~ s/;//g;          # Remove semi-colon if grabbed
        if (/filename="([^"]+)"/i) {
            $filename = $1;
        } elsif (/filename=(\S+)/i) {
--- 690,696 ----
  
      if ($_ = $hfields{'content-disposition'}) {
        ($disp)     = /^\s*(\S+)/;
!       $disp       =~ s/;/ /g;         # Remove semi-colon if grabbed
        if (/filename="([^"]+)"/i) {
            $filename = $1;
        } elsif (/filename=(\S+)/i) {