Import iftop-1.0pre4

[iftop.git] / hash.c

diff --git a/hash.c b/hash.c
index 540af8e609c083cac49f1ee224d8d854c4e270a2..1c500f16f19dbebee34ee0d8d0598e3247c90093 100644 (file)
--- a/hash.c
+++ b/hash.c
@@ -76,6 +76,11 @@ hash_status_enum hash_find(hash_type* hash_table, void* key, void **rec) {
 
 hash_status_enum hash_next_item(hash_type* hash_table, hash_node_type** ppnode) {
     int i;
+
+    if (hash_table == 0) {
+      return HASH_STATUS_KEY_NOT_FOUND;
+    }
+
     if(*ppnode != NULL) {
         if((*ppnode)->next != NULL) {
             *ppnode = (*ppnode)->next;
@@ -101,6 +106,11 @@ hash_status_enum hash_next_item(hash_type* hash_table, hash_node_type** ppnode)
 void hash_delete_all(hash_type* hash_table) {
     int i;
     hash_node_type *n, *nn;
+
+    if(hash_table == 0) {
+      return;
+    }
+
     for(i = 0; i < hash_table->size; i++) {
         n = hash_table->table[i];
         while(n != NULL) {