--- ip/iptunnel.c	2009-07-28 13:28:59.000000000 +0200
+++ ip/iptunnel.c	2009-07-28 13:29:29.000000000 +0200
@@ -400,6 +400,7 @@
 		if ((ptr = strchr(buf, ':')) == NULL ||
 		    (*ptr++ = 0, sscanf(buf, "%s", name) != 1)) {
 			fprintf(stderr, "Wrong format of /proc/net/dev. Sorry.\n");
+			fclose (fp);
 			return -1;
 		}
 		if (sscanf(ptr, "%ld%ld%ld%ld%ld%ld%ld%*d%ld%ld%ld%ld%ld%ld%ld",
@@ -438,6 +439,7 @@
 		}
 		printf("\n");
 	}
+	fclose (fp);
 	return 0;
 }