glsl: Standardize a few more uses of struct vs class keyword.
diff --git a/src/glsl/ir_structure_splitting.cpp b/src/glsl/ir_structure_splitting.cpp
index e257def..c024407 100644
--- a/src/glsl/ir_structure_splitting.cpp
+++ b/src/glsl/ir_structure_splitting.cpp
@@ -181,13 +181,13 @@
 
    void split_deref(ir_dereference **deref);
    void handle_rvalue(ir_rvalue **rvalue);
-   struct variable_entry *get_splitting_entry(ir_variable *var);
+   variable_entry *get_splitting_entry(ir_variable *var);
 
    exec_list *variable_list;
    void *mem_ctx;
 };
 
-struct variable_entry *
+variable_entry *
 ir_structure_splitting_visitor::get_splitting_entry(ir_variable *var)
 {
    assert(var);