glsl2: Steal ir_variable's constant_value field.

Fixes a link-time crash in glsl-vs-cross-3.

diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 8ebef7d..2fd654e 100644 (file)
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -908,6 +908,9 @@ visit_exec_list(exec_list *list, ir_visitor *visitor)
 static void
 steal_memory(ir_instruction *ir, void *new_ctx)
 {
+   ir_variable *var = ir->as_variable();
+   if (var != NULL && var->constant_value != NULL)
+      talloc_steal(ir, var->constant_value);
    talloc_steal(new_ctx, ir);
 }