Clang complains that ram_memory is used uninitialized when zen_enabled() is false. This patch fixes it.

Signed-off-by: C.W. Betts <computers57@hotmail.com>
Fixes a few more areas where a variable might be used uninitialized, as pointed out by Clang.

Signed-off-by: C.W. Betts <computers57@hotmail.com>