Upgrade hlua to fix compilation issues

See tomaka/hlua#223

Author: LinusCDE

Cargo.toml

@@ -34,7 +34,7 @@ fxhash = { version = "0.2.1", optional = true }
 aabb-quadtree = { version = "0.1.0", optional = true }
 
 # hlua
-hlua = { git = "https://github.com/fenollp/hlua.git", rev = "f327e79", optional = true } # hlua = { version = "0.4.1", optional = true } TODO: https://github.com/tomaka/hlua/pull/223
+hlua = { version = "0.4.3", optional = true }
 
 # runtime benchmarking
 stopwatch = { version = "0.0.7", optional = true }