crash: uninstall soname 'a'

How to repeat:
-----------------
uninstall soname 'a';

Call stack:
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Version: '10.0.0-MariaDB' socket: '' port: 3306 Source distribution
121227 18:39:49 [ERROR] mysqld got exception 0xc0000005 ;

mysqld.exe!mysql_uninstall_plugin()[sql_plugin.cc:2266]
mysqld.exe!mysql_execute_command()[sql_parse.cc:4685]
mysqld.exe!mysql_parse()[sql_parse.cc:6061]
mysqld.exe!dispatch_command()[sql_parse.cc:1219]
mysqld.exe!do_command()[sql_parse.cc:951]
mysqld.exe!threadpool_process_request()[threadpool_common.cc:225]
mysqld.exe!io_completion_callback()[threadpool_win.cc:568]
kernel32.dll!BaseFormatTimeOut()