0 pointer will not inserted into list

1 files changed, 4 insertions, 0 deletions

diff --git a/libopie2/opiecore/okeyfilter.cpp b/libopie2/opiecore/okeyfilter.cpp
index b064272..a517333 100644
--- a/libopie2/opiecore/okeyfilter.cpp
+++ b/libopie2/opiecore/okeyfilter.cpp
@@ -85,40 +85,44 @@ bool OKeyFilterPrivate::filter( int unicode, int keycode, int modifiers, bool is
     }
     return false;
 }
 
 void OKeyFilterPrivate::addHandler(QWSServer::KeyboardFilter*aF)
 {
+    if (!aF) return;
     if (filterList.find(aF)!=filterList.end()) {
         return;
     }
     odebug << "adding a keyboard filter handler"<<oendl;
     filterList.append(aF);
 }
 
 void OKeyFilterPrivate::remHandler(QWSServer::KeyboardFilter*aF)
 {
+    if (!aF) return;
     QValueList<QWSServer::KeyboardFilter*>::Iterator iter;
     if ( (iter=filterList.find(aF))==filterList.end() ) {
         return;
     }
     odebug << "removing a keyboard filter handler"<<oendl;
     filterList.remove(iter);
 }
 
 void OKeyFilterPrivate::addPreHandler(QWSServer::KeyboardFilter*aF)
 {
+    if (!aF) return;
     if (preFilterList.find(aF)!=preFilterList.end()) {
         return;
     }
     odebug << "adding a preferred keyboard filter handler"<<oendl;
     preFilterList.append(aF);
 }
 
 void OKeyFilterPrivate::remPreHandler(QWSServer::KeyboardFilter*aF)
 {
+    if (!aF) return;
     QValueList<QWSServer::KeyboardFilter*>::Iterator iter;
     if ( (iter=preFilterList.find(aF))==preFilterList.end() ) {
         return;
     }
     odebug << "removing a preferred keyboard filter handler"<<oendl;
     preFilterList.remove(iter);