block is bad if ioctl() returns nonzero
block is bad if ioctl() returns nonzero

Change-Id: I6fc4ce796bc663d05035927c0af0ce7ab6d07218

DerTeufel/dualboot_recovery,kylinmoddev/android_bootable_recovery,76Demented/bootable_recovery-,DerTeufel/dualboot_recovery,InsomniaAOSP/platform_bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,randomblame/bootable_recovery,randomblame/bootable_recovery,DerTeufel/dualboot_recovery,Plain-Andy/android_platform_bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,InsomniaAOSP/platform_bootable_recovery,DerTeufel/dualboot_recovery,Plain-Andy/android_platform_bootable_recovery,Plain-Andy/android_platform_bootable_recovery,InsomniaAOSP/platform_bootable_recovery,DerTeufel/dualboot_recovery,Plain-Andy/android_platform_bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,randomblame/bootable_recovery,randomblame/bootable_recovery,randomblame/bootable_recovery,76Demented/bootable_recovery-,InsomniaAOSP/platform_bootable_recovery,InsomniaAOSP/platform_bootable_recovery