Correctly remove values stored in the array-part of a table.

src/core/org/luaj/vm/LTable.java

@@ -362,6 +362,7 @@ public class LTable extends LValue {
 			final int index = key - 1;
 			if ( index < m_vector.length ) {
 				if ( m_vector[ index ] != LNil.NIL ) {
+					m_vector[ index ] = LNil.NIL;
 					--m_arrayEntries;
 				}
 				return;

src/test/java/org/luaj/vm/LTableTest.java

@@ -102,6 +102,23 @@ public class LTableTest extends TestCase {
 		assertEquals( 2, t.size() );
 	}
 	
+	public void testRemove0() {
+		LTable t = new LTable(2, 0);
+		
+		t.put( 1, new LString("foo") );
+		t.put( 2, new LString("bah") );
+		assertNotSame(LNil.NIL, t.get(1));
+		assertNotSame(LNil.NIL, t.get(2));
+		assertEquals(LNil.NIL, t.get(3));
+		
+		t.put( 1, LNil.NIL );
+		t.put( 2, LNil.NIL );
+		t.put( 3, LNil.NIL );
+		assertEquals(LNil.NIL, t.get(1));
+		assertEquals(LNil.NIL, t.get(2));
+		assertEquals(LNil.NIL, t.get(3));
+	}
+	
 	public void testRemove1() {
 		LTable t = new LTable(0, 1);
 		

src/test/java/org/luaj/vm/LuaJTest.java

@@ -42,6 +42,10 @@ public class LuaJTest extends TestCase {
 		runTest( "test7" );
 	}
 
+	public void testTest8() throws IOException, InterruptedException {
+		runTest( "test8" );
+	}
+
 	public void testAutoload() throws IOException, InterruptedException {
 		runTest( "autoload" );
 	}

src/test/res/test8.lua

@@ -0,0 +1,12 @@
+t = {}
+t[1] = "foo"
+t[2] = "bah"
+print(t[1])
+print(t[2])
+print(t[3])
+
+t[1] = nil
+t[2] = nil
+print(t[1])
+print(t[2])
+print(t[3])