Fix issue with current path query and regexps

lib/capybara/queries/current_path_query.rb

@@ -31,7 +31,7 @@ module Capybara
         end
 
         if @expected_path.is_a? Regexp
-          @actual_path.match(@expected_path)
+          @actual_path.to_s.match(@expected_path)
         else
           ::Addressable::URI.parse(@expected_path) == ::Addressable::URI.parse(@actual_path)
         end

lib/capybara/spec/session/has_current_path_spec.rb

@@ -13,6 +13,12 @@ Capybara::SpecHelper.spec '#has_current_path?' do
     expect(@session).not_to have_current_path(/monkey/)
   end
 
+  it "should not raise an error when non-http" do
+    @session.reset_session!
+    expect(@session.has_current_path?(/monkey/)).to eq false
+    expect(@session.has_current_path?("/with_js")).to eq false
+  end
+
   it "should handle non-escaped query options" do
     @session.click_link("Non-escaped query options")
     expect(@session).to have_current_path("/with_html?options[]=things")