typo fix (\fB -> \fR) before "return negative on error"
typo fix (\fB -> \fR) before "return negative on error"

Signed-off-by: Laszlo Ersek <7437296077edea1cb64451c122c4dac071f0cfbc@redhat.com>

vathpela/efivar-devel,rhinstaller/efivar,rhboot/efivar,android-ia/vendor_intel_external_efivar,rhboot/efivar,CyanogenMod/android_vendor_intel_external_efivar,rhinstaller/efivar