glsl: Fix uninitialized member in ir_hierarchical_vistor constructor.

Class member base_ir was not initialized by the default constructor.

diff --git a/src/glsl/ir_hierarchical_visitor.cpp b/src/glsl/ir_hierarchical_visitor.cpp
index d475df6..809b08e 100644 (file)
--- a/src/glsl/ir_hierarchical_visitor.cpp
+++ b/src/glsl/ir_hierarchical_visitor.cpp
@@ -26,6 +26,7 @@
 
 ir_hierarchical_visitor::ir_hierarchical_visitor()
 {
+   this->base_ir = NULL;
    this->callback = NULL;
    this->data = NULL;
 }