---
 interface.cc |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/interface.cc
+++ b/interface.cc
@@ -123,8 +123,12 @@ void _init()
 __attribute__ ((destructor)) 
 void _fini()
 {
-	for (ulong i = 0; i < N; ++i)
-		delete descriptors[i];
+	for (ulong i = 0; i < N; ++i) {
+		if (descriptors[i]) {
+			delete descriptors[i];
+			descriptors[i] = NULL;
+		}
+	}
 }
 
 /* /////////////////////////////////////////////////////////////////////// */