Fix NoMethodError when an exception has no message.

lib/rspec/core/formatters/base_text_formatter.rb

@@ -148,7 +148,7 @@ def dump_failure(example, index)
           output.puts "#{short_padding}#{index.next}) #{example.full_description}"
           output.puts "#{long_padding}#{red("Failure/Error:")} #{red(read_failed_line(exception, example).strip)}"
           output.puts "#{long_padding}#{red(exception.class.name << ":")}" unless exception.class.name =~ /RSpec/
-          exception.message.split("\n").each { |line| output.puts "#{long_padding}  #{red(line)}" }
+          exception.message.split("\n").each { |line| output.puts "#{long_padding}  #{red(line)}" } if exception.message
 
           example.example_group.ancestors.push(example.example_group).each do |group|
             if group.metadata[:shared_group_name]

spec/rspec/core/formatters/base_text_formatter_spec.rb

@@ -46,6 +46,15 @@ def run_all_and_dump_failures
         output.string.should =~ /(\s+)expected \"that\"\n\1     got \"this\"/m
       end
 
+      context "with an exception without a message" do
+        it "does not throw NoMethodError" do
+          exception_without_message = Exception.new()
+          exception_without_message.stub(:message){nil}
+          group.example("example name") { raise exception_without_message }
+          expect { run_all_and_dump_failures }.to_not raise_error(NoMethodError)
+        end
+      end
+
       context "with an exception class other than RSpec" do
         it "does not show the error class" do
           group.example("example name") { raise NameError.new('foo') }