memsize: Fix for bug in memory sizing code

The original memory sizing code in get_ram_size clobbers the word
at the base address, but forgets to restore it.

Signed-off-by: Iwo Mergler <Iwo.Mergler@netcommwireless.com>
diff --git a/common/memsize.c b/common/memsize.c
index 963e4f3..74cf075 100644
--- a/common/memsize.c
+++ b/common/memsize.c
@@ -73,6 +73,7 @@
 		}
 		return (0);
 	}
+	*addr = save[i];
 
 	for (cnt = 1; cnt < maxsize / sizeof (long); cnt <<= 1) {
 		addr = base + cnt;	/* pointer arith! */