Lua 5.3.5 ported to gitv5.3.5

This is the first commit for the branch Lua 5.3. All source files
were copied from the official distribution of 5.3.5 in the Lua site.
The test files are the same of 5.3.4. The manual came from the
previous RCS repository, revision 1.167.1.2.

1 files changed, 3 insertions, 2 deletions

diff --git a/lgc.c b/lgc.c
index de3f2a21..db4df829 100644
--- a/lgc.c
+++ b/lgc.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.c,v 2.214 2016/11/07 12:38:35 roberto Exp roberto $
+** $Id: lgc.c,v 2.215.1.2 2017/08/31 16:15:27 roberto Exp $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -643,8 +643,9 @@ static void clearkeys (global_State *g, GCObject *l, GCObject *f) {
     for (n = gnode(h, 0); n < limit; n++) {
       if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) {
         setnilvalue(gval(n));  /* remove value ... */
-        removeentry(n);  /* and remove entry from table */
       }
+      if (ttisnil(gval(n)))  /* is entry empty? */
+        removeentry(n);  /* remove entry from table */
     }
   }
 }