Add cast in debug message to avoid warnings about %d format specifier not matching a 64-bit size_t.
Add cast in debug message to avoid warnings about %d format specifier not matching a 64-bit size_t.

git-svn-id: a739a095880fa3ebc46f89d9df64e20166cf4ba9@1450 70169cfe-8b10-0410-8925-dcb4b91034d8

sttts/gwenhywfar,sttts/gwenhywfar,sttts/gwenhywfar