FIX: CheckAutoCenter May Return TRUE with DS_ABSALIGN

CAUSE

The function Dialog::CheckAutoCenter() is called to determine whether the dialog should be centered. In the case of y == 0, CheckAutoCenter() will always return TRUE. This happens because of the following code from CheckAutoCenter() in WINCORE.CPP:

   BOOL bResult = !(lpTemplate->style & DS_ABSALIGN) &&
       lpTemplate->x == 0 || lpTemplate->y == 0;
				

Note that because of the way C/C++ handles logical expressions, if lpTemplate->style == DS_ABSALIGN, then lpTemplate->x == 0 will not be evaluated. However, lpTemplate->y == 0 is evaluated and therefore is capable of returning TRUE to CheckAutoCenter().