server: avoid shadowing a parameter

[Austin English]

-- 
-Austin
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diff --git a/server/handle.c b/server/handle.c
index 2aaec37..d86b91b 100644
--- a/server/handle.c
+++ b/server/handle.c
@@ -157,16 +157,16 @@ static void handle_table_destroy( struct object *obj )
     {
         for (i = 0, entry = table->entries; i <= table->last; i++, entry++)
         {
-            struct object *obj = entry->ptr;
-            if (obj) obj->ops->close_handle( obj, table->process, index_to_handle(i) );
+            struct object *obj_tmp = entry->ptr;
+            if (obj_tmp) obj_tmp->ops->close_handle( obj_tmp, table->process, index_to_handle(i) );
         }
     }
 
     for (i = 0, entry = table->entries; i <= table->last; i++, entry++)
     {
-        struct object *obj = entry->ptr;
+        struct object *obj_tmp = entry->ptr;
         entry->ptr = NULL;
-        if (obj) release_object( obj );
+        if (obj_tmp) release_object( obj_tmp );
     }
     free( table->entries );
 }