move allocation of shProg->Attributes earlier in function

src/mesa/shader/slang/slang_link.c

@@ -290,6 +290,9 @@ _slang_resolve_attributes(struct gl_shader_program *shProg,
 
    assert(prog->Target == GL_VERTEX_PROGRAM_ARB);
 
+   if (!shProg->Attributes)
+      shProg->Attributes = _mesa_new_parameter_list();
+
    /* Build a bitmask indicating which attribute indexes have been
     * explicitly bound by the user with glBindAttributeLocation().
     */
@@ -299,9 +302,6 @@ _slang_resolve_attributes(struct gl_shader_program *shProg,
       usedAttributes |= attr;
    }
 
-   if (!shProg->Attributes)
-      shProg->Attributes = _mesa_new_parameter_list();
-
    /*
     * Scan program for generic attribute references
     */