Fix linux compilation

diff --git a/src/PartSet/PartSet_CustomPrs.cpp b/src/PartSet/PartSet_CustomPrs.cpp
index 1457e0307cd5a2cad622ddac5c3b07b4405762bc..5cd38b33b91be11bba776bda02e9dbd075d009b2 100755 (executable)
--- a/src/PartSet/PartSet_CustomPrs.cpp
+++ b/src/PartSet/PartSet_CustomPrs.cpp
@@ -111,7 +111,7 @@ void PartSet_CustomPrs::clearPrs()
   if (!anOperationPrs.IsNull())
     anOperationPrs.Nullify();
 
-  myOperationPrs = 0;
+  myOperationPrs.reset();
 }
 
 void PartSet_CustomPrs::initPrs()