Don't send execution_count with iopub error message

Author: takluyver

bash_kernel/kernel.py

@@ -161,10 +161,14 @@ def do_execute(self, code, silent, store_history=True,
             exitcode = 1
 
         if exitcode:
-            error_content = {'execution_count': self.execution_count,
-                             'ename': '', 'evalue': str(exitcode), 'traceback': []}
-
+            error_content = {
+                'ename': '',
+                'evalue': str(exitcode),
+                'traceback': []
+            }
             self.send_response(self.iopub_socket, 'error', error_content)
+
+            error_content['execution_count'] = self.execution_count
             error_content['status'] = 'error'
             return error_content
         else: