[pygobject] pygi-info.c: Robustify pointer arithmetic

[Martin Pitt <martinpitt src gnome org>]

commit 8bc98fc6665ebab763ee92361929139a0ebe66b5
Author: Martin Pitt <martinpitt gnome org>
Date:   Fri Jul 27 20:52:00 2012 +0200

    pygi-info.c: Robustify pointer arithmetic
    
    In _wrap_g_field_info_{get,set}_value(), use explicit char* casts to point out
    that we are using byte offsets. Fixes warnings:
    
    pygi-info.c:1277:43: warning: pointer of type 'void *' used in arithmetic [-Werror=pointer-arith]

 gi/pygi-info.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gi/pygi-info.c b/gi/pygi-info.c
index 8aafe8b..9f92cd3 100644
--- a/gi/pygi-info.c
+++ b/gi/pygi-info.c
@@ -1274,7 +1274,7 @@ _wrap_g_field_info_get_value (PyGIBaseInfo *self,
 
                 offset = g_field_info_get_offset ( (GIFieldInfo *) self->info);
 
-                value.v_pointer = pointer + offset;
+                value.v_pointer = (char*) pointer + offset;
 
                 goto argument_to_object;
             }
@@ -1410,7 +1410,7 @@ _wrap_g_field_info_set_value (PyGIBaseInfo *self,
                 size = g_struct_info_get_size ( (GIStructInfo *) info);
                 g_assert (size > 0);
 
-                g_memmove (pointer + offset, value.v_pointer, size);
+                g_memmove ((char*) pointer + offset, value.v_pointer, size);
 
                 g_base_info_unref (info);