Reacted on compiler warnings from gzpLinux on kernel 2.6

libisofs/filters/zisofs.c

@@ -913,6 +913,8 @@ int ziso_filter_get_uncompressor(FilterContext *filter, IsoStream *original,
 }
 
 
+#ifdef Libisofs_with_zliB
+
 /* Produce a parameter object suitable for iso_file_add_filter().
  * It may be disposed by free() after all those calls are made.
  *
@@ -939,6 +941,7 @@ int ziso_create_context(FilterContext **filter, int flag)
     return ISO_SUCCESS;
 }
 
+#endif Libisofs_with_zliB
 
 /*
  * @param flag bit0= if_block_reduction rather than if_reduction

libisofs/node.c

@@ -208,6 +208,7 @@ int iso_node_get_xinfo(IsoNode *node, iso_node_xinfo_func proc, void **data)
         return ISO_NULL_POINTER;
     }
 
+    *data = NULL;
     pos = node->xinfo;
     while (pos != NULL) {
         if (pos->process == proc) {

libisofs/tree.c

@@ -921,7 +921,7 @@ int iso_tree_path_to_node(IsoImage *image, const char *path, IsoNode **node)
     int result;
     IsoNode *n;
     IsoDir *dir;
-    char *ptr, *brk_info, *component;
+    char *ptr, *brk_info = NULL, *component;
 
     if (image == NULL || path == NULL) {
         return ISO_NULL_POINTER;