Remove trailing space from error message

lib/aasm/errors.rb

@@ -7,11 +7,11 @@ module AASM
 
     def initialize(object, event_name, state_machine_name, failures = [])
       @object, @event_name, @originating_state, @failures = object, event_name, object.aasm(state_machine_name).current_state, failures
-      super("Event '#{event_name}' cannot transition from '#{originating_state}'. #{reasoning}")
+      super("Event '#{event_name}' cannot transition from '#{originating_state}'.#{reasoning}")
     end
 
     def reasoning
-      "Failed callback(s): #{failures}." unless failures.empty?
+      " Failed callback(s): #{failures}." unless failures.empty?
     end
   end
 

spec/unit/exception_spec.rb

@@ -5,7 +5,7 @@ describe AASM::InvalidTransition do
     process = ProcessWithNewDsl.new
     expect { process.stop! }.to raise_error do |err|
       process.start
-      expect(err.message).to eql("Event 'stop' cannot transition from 'sleeping'. ")
+      expect(err.message).to eql("Event 'stop' cannot transition from 'sleeping'.")
     end
   end
 end

spec/unit/transition_spec.rb

@@ -6,7 +6,7 @@ describe 'transitions' do
     process = ProcessWithNewDsl.new
     expect { process.stop! }.to raise_error do |err|
       expect(err.class).to eql(AASM::InvalidTransition)
-      expect(err.message).to eql("Event 'stop' cannot transition from 'sleeping'. ")
+      expect(err.message).to eql("Event 'stop' cannot transition from 'sleeping'.")
       expect(err.object).to eql(process)
       expect(err.event_name).to eql(:stop)
     end