glcpp: Don't emit SPACE tokens in conditional_tokens production.

Fixes glslparsertest defined-01.vert.

Reported-by: José Fonseca <jfonseca@vmware.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>

src/glsl/glcpp/glcpp-parse.y

@@ -472,7 +472,6 @@ conditional_token:
 conditional_tokens:
 	/* Exactly the same as pp_tokens, but using conditional_token */
 	conditional_token {
-		parser->space_tokens = 1;
 		$$ = _token_list_create (parser);
 		_token_list_append ($$, $1);
 		talloc_unlink (parser, $1);