* lib/*.rb: Remove unused variable warnings.

  Patch by Run Paint [ruby-core:30991]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

5 files changed, 6 insertions, 7 deletions

diff --git a/lib/webrick/cgi.rb b/lib/webrick/cgi.rb
index 7099d14689..806d050bc9 100644
--- a/lib/webrick/cgi.rb
+++ b/lib/webrick/cgi.rb
@@ -143,7 +143,7 @@ module WEBrick
           setup_header
           @header_part << CRLF
           @header_part.rewind
-        rescue Exception => ex
+        rescue Exception
           raise CGIError, "invalid CGI environment"
         end
       end
diff --git a/lib/webrick/httpresponse.rb b/lib/webrick/httpresponse.rb
index 16bf15b6dd..0c292bed2d 100644
--- a/lib/webrick/httpresponse.rb
+++ b/lib/webrick/httpresponse.rb
@@ -280,7 +280,7 @@ module WEBrick
       if @request_method == "HEAD"
         # do nothing
       elsif chunked?
-        remain = body ? @body.bytesize : 0
+        body ? @body.bytesize : 0
         while buf = @body[@sent_size, @buffer_size]
           break if buf.empty?
           data = ""
diff --git a/lib/webrick/httpservlet/cgi_runner.rb b/lib/webrick/httpservlet/cgi_runner.rb
index dd7325d25c..32ecb6fe00 100644
--- a/lib/webrick/httpservlet/cgi_runner.rb
+++ b/lib/webrick/httpservlet/cgi_runner.rb
@@ -20,7 +20,6 @@ end
 
 STDIN.binmode
 
-buf = ""
 len = sysread(STDIN, 8).to_i
 out = sysread(STDIN, len)
 STDOUT.reopen(open(out, "w"))
@@ -38,7 +37,7 @@ hash.each{|k, v| ENV[k] = v if v }
 dir = File::dirname(ENV["SCRIPT_FILENAME"])
 Dir::chdir dir
 
-if interpreter = ARGV[0]
+if ARGV[0]
   argv = ARGV.dup
   argv << ENV["SCRIPT_FILENAME"]
   exec(*argv)
diff --git a/lib/webrick/httpservlet/erbhandler.rb b/lib/webrick/httpservlet/erbhandler.rb
index 845db07169..cbd4fb2303 100644
--- a/lib/webrick/httpservlet/erbhandler.rb
+++ b/lib/webrick/httpservlet/erbhandler.rb
@@ -44,8 +44,8 @@ module WEBrick
       private
       def evaluate(erb, servlet_request, servlet_response)
         Module.new.module_eval{
-          meta_vars = servlet_request.meta_vars
-          query = servlet_request.query
+          servlet_request.meta_vars
+          servlet_request.query
           erb.result(binding)
         }
       end
diff --git a/lib/webrick/log.rb b/lib/webrick/log.rb
index 0ffa12dd96..550f9f56d6 100644
--- a/lib/webrick/log.rb
+++ b/lib/webrick/log.rb
@@ -60,7 +60,7 @@ module WEBrick
     private
 
     def format(arg)
-      str = if arg.is_a?(Exception)
+      if arg.is_a?(Exception)
         "#{arg.class}: #{arg.message}\n\t" <<
         arg.backtrace.join("\n\t") << "\n"
       elsif arg.respond_to?(:to_str)