Have "cf_merge_files()" always close "out_fd" before returning; it does

so if "wtap_dump_fdopen()" succeeds (as a side-effect of calling
"wtap_dump_close()"), even if "cf_merge_fails()" after that, so it
should do so if it fails.

That means we don't need to close it in the callers of "cf_merge_files()".

svn path=/trunk/; revision=13407

file.c

@@ -981,6 +981,7 @@ cf_merge_files(const char *out_filename, int out_fd, int in_file_count,
       merge_select_frame_type(in_file_count, in_files),
       merge_max_snapshot_length(in_file_count, in_files), &open_err);
   if (pdh == NULL) {
+    close(out_fd);
     merge_close_in_files(in_file_count, in_files);
     free(in_files);
     cf_open_failure_alert_box(out_filename, open_err, err_info, TRUE,

gtk/drag_and_drop.c

@@ -148,7 +148,6 @@ dnd_merge_files(int in_file_count, char **in_filenames)
 
     if (!merge_ok) {
         /* merge failed */
-	close(out_fd);	/* XXX - isn't it already closed? */
 	return;
     }
 
@@ -240,12 +239,13 @@ dnd_open_file_cmd(GtkSelectionData *selection_data)
         break;
     case(1):
         /* open and read the capture file (this will close an existing file) */
-	    if (cf_open(&cfile, in_filenames[0], FALSE, &err) == CF_OK) {
-		    cf_read(&cfile);
-            add_menu_recent_capture_file(in_filenames[0]);
-	    } else {
-		    /* the capture file couldn't be read (doesn't exist, file format unknown, ...) */
-	    }
+        if (cf_open(&cfile, in_filenames[0], FALSE, &err) == CF_OK) {
+          /* XXX - add this to the menu if the read fails? */
+          cf_read(&cfile);
+          add_menu_recent_capture_file(in_filenames[0]);
+	} else {
+          /* the capture file couldn't be read (doesn't exist, file format unknown, ...) */
+	}
         break;
     default:
         /* build and show the info dialog */

gtk/file_dlg.c

@@ -1057,7 +1057,6 @@ file_merge_ok_cb(GtkWidget *w, gpointer fs) {
   g_free(cf_name);
   
   if (merge_status != CF_OK) {
-    close(out_fd);	/* XXX - it's already closed, right? */
     if (rfcode != NULL)
       dfilter_free(rfcode);
     return;