mesa: glsl: only try to link shaders defining main()
diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c
index 5a15ec9..a401803 100644
--- a/src/mesa/shader/shader_api.c
+++ b/src/mesa/shader/shader_api.c
@@ -262,15 +262,11 @@
 void
 _mesa_free_shader(GLcontext *ctx, struct gl_shader *sh)
 {
-   GLuint i;
    if (sh->Source)
       _mesa_free((void *) sh->Source);
    if (sh->InfoLog)
       _mesa_free(sh->InfoLog);
-   for (i = 0; i < sh->NumPrograms; i++)
-      _mesa_reference_program(ctx, &sh->Programs[i], NULL);
-   if (sh->Programs)
-      _mesa_free(sh->Programs);
+   _mesa_reference_program(ctx, &sh->Program, NULL);
    _mesa_free(sh);
 }