fsck.f2fs: skip block count fix when i_links is fixed
fsck.f2fs: skip block count fix when i_links is fixed

If i_links is wrong, we should not check block count, since it doesn't count
correctly which results in changing the block count to 1.

This patch fixes that.

Change-Id: I578a3e3d9a96e49cc5ac5c5349b4a6bf7eda29cb
Signed-off-by: Jaegeuk Kim <71255387a32c360dfbe6dfb7aaeb123bf1dc8cb6@kernel.org>

Yu-AndroidM/android_external_f2fs-tools,Yu-AndroidM/android_external_f2fs-tools