Bug#13833438: ERROR CODES MUST HAVE SAME VALUE ACROSS MYSQL VERSIONS

Pre-requisite patch.
Add end-of-file marker to 5.5 version of errmsg-utf8.txt.

sql/share/errmsg-utf8.txt

@@ -6494,3 +6494,6 @@ ER_BINLOG_UNSAFE_WRITE_AUTOINC_SELECT
 ER_BINLOG_UNSAFE_CREATE_SELECT_AUTOINC
   eng "CREATE TABLE... SELECT...  on a table with an auto-increment column is unsafe because the order in which rows are retrieved by the SELECT determines which (if any) rows are inserted. This order cannot be predicted and may differ on master and the slave."
 
+#
+#  End of 5.5 error messages.
+#