Skip interop exceptions when popping exception state

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/bytecode/PBytecodeRootNode.java

@@ -2866,11 +2866,10 @@ private PException popExceptionState(Object[] arguments, Object savedException,
         PException localException = null;
         if (savedException instanceof PException) {
             localException = (PException) savedException;
+            PArguments.setException(arguments, localException);
+        } else if (savedException == null) {
+            PArguments.setException(arguments, outerException);
         }
-        if (savedException == null) {
-            savedException = outerException;
-        }
-        PArguments.setException(arguments, (PException) savedException);
         return localException;
     }