Fix more rounding overflows for filesystems that have 2**32-1 blocks

Signed-off-by: Eric Sandeen <esandeen@redhat.com>
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 256c813..87ae687 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -1260,7 +1260,7 @@
 	}
 
 	if (!fs_type) {
-		int megs = fs_param.s_blocks_count * 
+		int megs = (__u64)fs_param.s_blocks_count *
 			(EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024;
 
 		if (megs <= 3)