Index: main/io.c
===================================================================
--- main/io.c	(revision 42839)
+++ main/io.c	(working copy)
@@ -242,7 +242,7 @@
 			ioc->fds[x].events = 0;
 			ioc->fds[x].revents = 0;
 			ioc->needshrink = 1;
-			if (!ioc->current_ioc)
+			if (ioc->current_ioc == -1)
 				io_shrink(ioc);
 			return 0;
 		}