glsl: Initialize data in read_constant.

Completely initialize data that is passed into a ir_constant constructor.

Fixes piglit glsl-fs-mix valgrind uninitialized variable error on
softpipe and llvmpipe.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/glsl/ir_reader.cpp b/src/glsl/ir_reader.cpp
index 366db32774..e57e03c307 100644
--- a/src/glsl/ir_reader.cpp
+++ b/src/glsl/ir_reader.cpp
@@ -803,7 +803,7 @@ read_constant(_mesa_glsl_parse_state *st, s_list *list)
 
    const glsl_type *const base_type = type->get_base_type();
 
-   ir_constant_data data;
+   ir_constant_data data = { { 0 } };
 
    // Read in list of values (at most 16).
    int k = 0;