compiler warnings about transposed memset parameters

[Edward Sheldrake]

This is from Fedora 11, compiling svn r197:

In function 'void* memset(void*, int, size_t)',
    inlined from 'bool highscore::loadData()' at highscore.cpp:217:
/usr/include/bits/string3.h:82: warning: call to '__warn_memset_zero_len' declared with attribute warning: memset used with constant zero length parameter; this could be due to transposed parameters

and repeated about lines 223 and 229.