d: fix double definition of YYSemanticType

[Akim Demaille]

commit e1a843cc69712a5a1941c89dbb8bdbdf727898c9
Author: Akim Demaille <address@hidden>
Date:   Sat Dec 8 08:05:00 2018 +0100

    d: fix double definition of YYSemanticType
    
    * data/lalr1.d: When moving to b4_user_union_members, it also defines
    b4_tag_seen_flag, so we had two definitions.

diff --git a/data/lalr1.d b/data/lalr1.d
index 04b48e0e..2055884e 100644
--- a/data/lalr1.d
+++ b/data/lalr1.d
@@ -226,11 +226,10 @@ private immutable bool yy_location_is_class = true;
 ]]))m4_ifdef([b4_user_union_members], [private union YYSemanticType
 {
 b4_user_union_members
-};
-
-]m4_if(b4_tag_seen_flag, 0,
-[[private alias int YYSemanticType;]]))
-b4_token_enums(b4_tokens)[
+};],
+[m4_if(b4_tag_seen_flag, 0,
+[[private alias int YYSemanticType;]])])[
+]b4_token_enums(b4_tokens)[
 ]b4_public_if([public ])dnl
 b4_abstract_if([abstract ])dnl
 b4_final_if([final ])dnl