Bug #17168602 MYSQL_PLUGIN REMOVES NON-DIRECTORY TYPE FILES

SPECIFIED WITH THE BASEDIR OPTION

Description: The mysql_plugin client attempts to remove any
filename specified to the --basedir option. The problem is 
that if the filename does not end with a slash, it will 
attempt to unlink it, which succeeds for files, but not for 
directories.

Analysis: When we are starting mysql_plugin with basedir 
option and if we are giving path of a file as basedir, it 
deletes that file. It was because it uses a function 
my_delete which unlinks the file path given.

Fix:  As a fix we replace that line using another function 
my_free, which will only free the  pointer which is having 
that file path.

client/mysql_plugin.c

@@ -856,7 +856,7 @@ static int process_options(int argc, char *argv[], char *operation)
       strncat(buff, FN_DIRSEP, sizeof(buff) - strlen(buff) - 1);
 #endif
       buff[sizeof(buff) - 1]= 0;
-      my_delete(opt_basedir, MYF(0));
+      my_free(opt_basedir);
       opt_basedir= my_strdup(buff, MYF(MY_FAE));
     }
   }