glsl: Use correct mode for split components.

The mode should stay the same as the original struct. In
particular, shared should not be changed to temporary.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

src/compiler/glsl/opt_structure_splitting.cpp

@@ -351,7 +351,7 @@ do_structure_splitting(exec_list *instructions)
 	 entry->components[i] =
 	    new(entry->mem_ctx) ir_variable(type->fields.structure[i].type,
 					    name,
-					    ir_var_temporary);
+					    (ir_variable_mode) entry->var->data.mode);
 	 entry->var->insert_before(entry->components[i]);
       }