Refactor `append_gen` function.

306f0211 · Yukihiro "Matz" Matsumoto · a406a35c · 306f0211
Commit 306f0211 authored Oct 03, 2019 by Yukihiro "Matz" Matsumoto
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mrbgems/mruby-compiler/core/parse.y mrbgems/mruby-compiler/core/parse.y +2 -3

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--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -202,12 +202,11 @@ append_gen(parser_state *p, node *a, node *b)
  node *c = a;

  if (!a) return b;
+  if (!b) return a;
  while (c->cdr) {
    c = c->cdr;
  }
-  if (b) {
-    c->cdr = b;
-  }
+  c->cdr = b;
  return a;
 }
 #define append(a,b) append_gen(p,(a),(b))