#12 Fix failed to build without 'LARGEMEM'

[WHR]

Build failed with:

lmon16i.c: In function ‘main’:
lmon16i.c:6636:13: error: ‘struct mem_stat’ has no member named ‘hugetotal’; did you mean ‘hightotal’?
lmon16i.c:6637:17: error: ‘struct mem_stat’ has no member named ‘hugetotal’; did you mean ‘hightotal’?
lmon16i.c:6637:36: error: ‘struct mem_stat’ has no member named ‘hugefree’; did you mean ‘highfree’?

Fix:

--- lmon16i.c.orig  2019-02-05 23:55:22.000000000 +0800
+++ lmon16i.c   2019-03-29 13:12:37.754943219 +0800
@@ -6628,6 +6628,7 @@
        p->mem.hugesize = 16*1024;
 */
    }
+#ifdef LARGEMEM
    if (show_large) {
        proc_read(P_MEMINFO);
        proc_mem();
@@ -6669,6 +6670,7 @@
        }
        }
    }
+#endif
    if (show_vm) {
 #define VMDELTA(variable) (p->vm.variable - q->vm.variable)
 #define VMCOUNT(variable) (p->vm.variable                 )