scp: Fix potential infinite loop in ssh_scp_close

Signed-off-by: Mark Riordan <mriordan@ipswitch.com>
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>

src/scp.c

@@ -148,7 +148,7 @@ int ssh_scp_close(ssh_scp scp){
      */
     while(!ssh_channel_is_eof(scp->channel)){
       err=ssh_channel_read(scp->channel,buffer,sizeof(buffer),0);
-      if(err==SSH_ERROR)
+      if(err==SSH_ERROR || err==0)
         break;
     }
     if(ssh_channel_close(scp->channel) == SSH_ERROR){