[sr-dev] need for more informative db query error message

[Juha Heinanen]

Daniel-Constantin Mierla writes:

> perhaps the log in db_mysql_async_exec_task() can be easily extended to
> print more details.

looks like it.  i made the change below.  is it ok to commit the diff?

-- juha

*** /usr/src/orig/kamailio/modules/db_mysql/km_dbase.c	Mon May  4 10:34:34 2015
--- km_dbase.c	Thu May 21 09:27:57 2015
***************
*** 140,146 ****
  		return;
  	}
  	if(db_mysql_submit_query(dbc, &p[1])<0) {
! 		LM_ERR("failed to execute query on async worker\n");
  	}
  	db_mysql_close(dbc);
  }
--- 140,147 ----
  		return;
  	}
  	if(db_mysql_submit_query(dbc, &p[1])<0) {
! 		LM_ERR("failed to execute query [%.*s] on async worker\n",
! 		       p[1].len, p[1].s);
  	}
  	db_mysql_close(dbc);
  }