[xml] patch: xmlcatalog core dump

[Stefan Kost <kost imn htwk-leipzig de>]

hi daniel,

when one runs xmlcatalog like this :
  xmlcatalog --noout --add "..." "..." "..."
means forgetting the final filename, the tool core-dumps :
  add command failed
  could not open Segmentation fault (core dumped)

The attached patch fixes this (sorry the patch is against version 2.5.11). I
hadn't time to update yet. Will likely work anyway as its only a small change.

ciao
  Stefan
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--- xmlcatalog.orig.c   Fri Dec 12 15:02:08 2003
+++ xmlcatalog.c        Fri Dec 12 15:03:37 2003
@@ -37,7 +37,7 @@
 static int del = 0;
 static int convert = 0;
 static int verbose = 0;
-static char *filename;
+static char *filename = NULL;
 
 #ifdef LIBXML_CATALOG_ENABLED
 
@@ -556,7 +556,7 @@
        }
     }
     if ((!sgml) && ((add) || (del) || (create) || (convert))) {
-       if (noout) {
+       if (noout && filename && *filename) {
            FILE *out;
 
            out = fopen(filename, "w");