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make QgsMapLayerRegistry::addLayer() a bit more robust

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git-svn-id: http://svn.osgeo.org/qgis/trunk@11961 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
jef 2009-11-07 16:51:31 +00:00
parent bd9186bdbf
commit 04e023c91b
1 changed files with 1 additions and 1 deletions
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src/core/qgsmaplayerregistry.cpp
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@ -66,7 +66,7 @@ QgsMapLayer * QgsMapLayerRegistry::mapLayer( QString theLayerId )
QgsMapLayer *
QgsMapLayerRegistry::addMapLayer( QgsMapLayer * theMapLayer, bool theEmitSignal )
{
if ( !theMapLayer->isValid() )
if ( !theMapLayer || !theMapLayer->isValid() )
{
QgsDebugMsg( "cannot add invalid layers" );
return 0;