[PATCH] favor #nil? instead of "== nil" comparisons in cold code

[Eric Wong <e@80x24.org>]

We don't need optimized dispatch methods in cold code, so use
the more space-efficient "nil?" method dispatch to save us one
word per-call site for a rough total of 24 bytes saving.
---
 lib/yahns/config.rb       | 4 ++--
 lib/yahns/http_context.rb | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/yahns/config.rb b/lib/yahns/config.rb
index f4164a9..38f73b7 100644
--- a/lib/yahns/config.rb
+++ b/lib/yahns/config.rb
@@ -18,8 +18,8 @@ def initialize(config_file = nil)
   end
 
   def _check_in_block(ctx, var)
-    if ctx == nil
-      return var if @block == nil
+    if ctx.nil?
+      return var if @block.nil?
       msg = "#{var} must be called outside of #{@block.type}"
     else
       ctx = Array(ctx)
diff --git a/lib/yahns/http_context.rb b/lib/yahns/http_context.rb
index 13b8686..1554086 100644
--- a/lib/yahns/http_context.rb
+++ b/lib/yahns/http_context.rb
@@ -46,7 +46,7 @@ def after_fork_init
 
   def __wrap_app(app)
     # input_buffering == false is handled in http_client
-    return app if @client_max_body_size == nil
+    return app if @client_max_body_size.nil?
 
     require_relative 'cap_input'
     return app if @input_buffering == true
-- 
2.3.2.465.ga3b75b3