Make nsSupportsHashtable not crash when you try to Get or Remove an item

not in the table already.
1999-09-02 07:01:53 +00:00
parent b703a644da
commit 9404d98db8
1 changed files with 4 additions and 0 deletions
--- a/xpcom/ds/nsHashtable.cpp
+++ b/xpcom/ds/nsHashtable.cpp
@@ -401,6 +401,8 @@ void*
 nsSupportsHashtable::Get(nsHashKey *aKey)
 {
    void* data = nsHashtable::Get(aKey);
+    if (!data)
+        return nsnull;
    nsISupports* element = NS_STATIC_CAST(nsISupports*, data);
    NS_ADDREF(element);
    return data;
@@ -410,6 +412,8 @@ void*
 nsSupportsHashtable::Remove(nsHashKey *aKey)
 {
    void* data = nsHashtable::Remove(aKey);
+    if (!data)
+        return nsnull;
    nsISupports* element = NS_STATIC_CAST(nsISupports*, data);
    NS_RELEASE(element);
    return data;