frontends/ast: code style

Signed-off-by: David Shah <dave@ds0.me>

frontends/ast/simplify.cc

diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc
index 0ebc183..44fd32c 100644
--- a/frontends/ast/simplify.cc
+++ b/frontends/ast/simplify.cc
@@ -786,9 +786,8 @@
 	if (type == AST_TYPEDEF) {
 		log_assert(children.size() == 1);
 		log_assert(children[0]->type == AST_WIRE || children[0]->type == AST_MEMORY);
-		while(children[0]->simplify(const_fold, at_zero, in_lvalue, stage, width_hint, sign_hint, in_param)) {
+		while(children[0]->simplify(const_fold, at_zero, in_lvalue, stage, width_hint, sign_hint, in_param))
 			did_something = true;
-		};
 		log_assert(!children[0]->is_custom_type);
 	}