glsl: Fix parser rule for type_specifier

Do not assign a value to ast_type_specifier::precision when no precision
qualifier is present.

diff --git a/src/glsl/glsl_parser.ypp b/src/glsl/glsl_parser.ypp
index 124ee18..903d3f0 100644 (file)
--- a/src/glsl/glsl_parser.ypp
+++ b/src/glsl/glsl_parser.ypp
@@ -1195,6 +1195,9 @@ storage_qualifier:
 
 type_specifier:
        type_specifier_no_prec
+       {
+          $$ = $1;
+       }
        | precision_qualifier type_specifier_no_prec
        {
           $$ = $2;