master with NO_YML_SUPPORT=ON bugs with Illegal instruction

[joakim-tjernlund]

> fw_printenv 
Illegal instruction

Tracked it down to an empty line in fw_env.config:

# Configuration file for fw_(printenv/setenv) utility.
# Up to two entries are valid, in this case the redundant
# environment sector is assumed present.
# Notice, that the "Number of sectors" is not required on NOR and SPI-dataflash.
# Futhermore, if the Flash sector size is omitted, this value is assumed to
# be the same as the Environment size, which is valid for NOR and SPI-dataflash
# Device offset must be prefixed with 0x to be parsed as a hexadecimal value.

# NOR example
# MTD device name       Device offset   Env. size       Flash sector size       Number of sectors
/dev/mtd4               0x0000          0x1000          0x10000
/dev/mtd6               0x0000          0x1000          0x10000

# MTD SPI-dataflash example
# MTD device name       Device offset   Env. size       Flash sector size       Number of sectors
#/dev/mtd5              0x4200          0x4200
#/dev/mtd6              0x4200          0x4200

# NAND example
#/dev/mtd0              0x4000          0x4000          0x20000                 2

# On a block device a negative offset is treated as a backwards offset from the
# end of the device/partition, rather than a forwards offset from the start.

# Block device example
#/dev/mmcblk0           0xc0000         0x20000
#/dev/mmcblk0           -0x20000        0x20000

# VFAT example
#/boot/uboot.env        0x0000          0x4000

# UBI volume
#/dev/ubi0_0            0x0             0x1f000         0x1f000
#/dev/ubi0_1            0x0             0x1f000         0x1f000

# UBI volume by name
#/dev/ubi0:env          0x0             0x1f000         0x1f000
#/dev/ubi0:env-redund   0x0             0x1f000         0x1f000

if I remove the empty line just above NOR example it works