[WFS provider] Fix build problem due to signature change of QgsRectangle::combineExtentWith()

Author: rouault

src/providers/wfs/qgswfsprovider.cpp

@@ -706,7 +706,7 @@ QgsRectangle QgsWFSProvider::extent()
     return computedExtent;
   }
 
-  computedExtent.combineExtentWith( &mShared->mCapabilityExtent );
+  computedExtent.combineExtentWith( mShared->mCapabilityExtent );
   return computedExtent;
 }
 

src/providers/wfs/qgswfsshareddata.cpp

@@ -884,7 +884,7 @@ void QgsWFSSharedData::serializeFeatures( QVector<QgsWFSFeatureGmlIdPair>& featu
       if ( localComputedExtent.isNull() )
         localComputedExtent = bBox;
       else
-        localComputedExtent.combineExtentWith( &bBox );
+        localComputedExtent.combineExtentWith( bBox );
       QgsGeometry* polyBoundingBox = QgsGeometry::fromRect( bBox );
       cachedFeature.setGeometry( polyBoundingBox );
     }