Bug#27994 Expose counter for stored procedure calls in Com_% status

 - Expose the already existing counter for number of stored procedure calls


sql/mysqld.cc:
  Expose counter for "Com_call_procedure"

sql/mysqld.cc

@@ -6185,6 +6185,7 @@ struct show_var_st status_vars[]= {
   {"Com_analyze",	       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ANALYZE]), SHOW_LONG_STATUS},
   {"Com_backup_table",	       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_BACKUP_TABLE]), SHOW_LONG_STATUS},
   {"Com_begin",		       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_BEGIN]), SHOW_LONG_STATUS},
+  {"Com_call_procedure",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CALL]), SHOW_LONG_STATUS},
   {"Com_change_db",	       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHANGE_DB]), SHOW_LONG_STATUS},
   {"Com_change_master",	       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHANGE_MASTER]), SHOW_LONG_STATUS},
   {"Com_check",		       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHECK]), SHOW_LONG_STATUS},