[vala/wip/array-length-type] codegen: Infer index type of foreach on array from ArrayType.length_type

[Rico Tzschichholz <ricotz src gnome org>]

commit 043f0f1c3fa9e7823fccbda022576cdc656ed010
Author: George Barrett <bob bob131 so>
Date:   Tue Dec 12 14:39:33 2017 +1100

    codegen: Infer index type of foreach on array from ArrayType.length_type
    
    https://gitlab.gnome.org/GNOME/vala/issues/607

 codegen/valaccodecontrolflowmodule.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/codegen/valaccodecontrolflowmodule.vala b/codegen/valaccodecontrolflowmodule.vala
index 1936d512d..58e51d99f 100644
--- a/codegen/valaccodecontrolflowmodule.vala
+++ b/codegen/valaccodecontrolflowmodule.vala
@@ -247,7 +247,7 @@ public abstract class Vala.CCodeControlFlowModule : CCodeMethodModule {
                        // store array length for use by _vala_array_free
                        ccode.add_assignment (get_variable_cexpression (get_array_length_cname 
(get_local_cname (collection_backup), 1)), array_len);
 
-                       var iterator_variable = new LocalVariable (int_type.copy (), stmt.variable_name + 
"_it");
+                       var iterator_variable = new LocalVariable (array_type.length_type.copy (), 
stmt.variable_name + "_it");
                        visit_local_variable (iterator_variable);
                        var it_name = get_local_cname (iterator_variable);