glsl: make use of glsl_type::is_array()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>

src/compiler/glsl/ir_print_visitor.cpp

@@ -145,7 +145,7 @@ ir_print_visitor::unique_name(ir_variable *var)
 static void
 print_type(FILE *f, const glsl_type *t)
 {
-   if (t->base_type == GLSL_TYPE_ARRAY) {
+   if (t->is_array()) {
       fprintf(f, "(array ");
       print_type(f, t->fields.array);
       fprintf(f, " %u)", t->length);