Index: src/cap-ng.c
===================================================================
--- src/cap-ng.c	(revision 56)
+++ src/cap-ng.c	(working copy)
@@ -197,6 +197,7 @@
 				if (errno == 0)
 					last_cap = val;
 			}
+			close(fd);
 		}
 		if (last_cap == -1)
 			last_cap = CAP_LAST_CAP;