ir_constant_expression: Initialize all components of constant data to 0.
This is probably just a good idea, and will come in useful when
implementing things like matrix multiplication.
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index 548217c..1b81017 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -133,6 +133,8 @@
unsigned int operand, c;
ir_constant_data data;
+ memset(&data, 0, sizeof(data));
+
for (operand = 0; operand < ir->get_num_operands(); operand++) {
op[operand] = ir->operands[operand]->constant_expression_value();
if (!op[operand])