* if_proc.c, ipforward_proc.c, rtread_proc.c: Fix fd leaks.

	 [backport candidate]
diff --git a/zebra/rtread_proc.c b/zebra/rtread_proc.c
index 6e021c3..491fc98 100644
--- a/zebra/rtread_proc.c
+++ b/zebra/rtread_proc.c
@@ -96,6 +96,7 @@
       rib_add_ipv4 (ZEBRA_ROUTE_KERNEL, zebra_flags, &p, &gateway, 0, 0, 0, 0);
     }
 
+  fclose (fp);
   return 0;
 }
 
@@ -155,6 +156,7 @@
       rib_add_ipv6 (ZEBRA_ROUTE_KERNEL, zebra_flags, &p, &gateway, 0, 0);
     }
 
+  fclose (fp);
   return 0;
 }
 #endif /* HAVE_IPV6 */