mca-recover: Fix compilation warning about fgets() return value

Some compilers complain:

mca-recover.c:135:9: warning: ignoring return value of ‘fgets’ \
declared with attribute ‘warn_unused_result’ [-Wunused-result]

Check the return value (even though it doesn't really matter).

Signed-off-by: Tony Luck <tony.luck@intel.com>
1 file changed