Warnings from rpmlint

[ci-macpaw]

Luigi Baldoni (luigino):

While building unar on openSUSE I get these warnings at the end. I thought you should know.

I: A function overflows or underflows an array access. This could be a real error,
   but occasionaly this condition is also misdetected due to loop unrolling or strange pointer
   handling. So this is warning only, please review.
W: unar arraysubscript libxad/clients/AMPK.c:207, 210, 228, 261, 292
W: unar arraysubscript libxad/clients/Zoom.c:218, 171

I: Program causes undefined operation
   (likely same variable used twiceand post/pre incremented in the same expression).
   e.g. x = x++; Split it in two operations.
W: unar sequence-point Crypto/aeskey.c:402, 403, 493, 494, 495, 496

I: Program is likely to break with new gcc. Try -fno-strict-aliasing.
W: unar strict-aliasing-punning Crypto/sha.c:679, 1006, 1410, 1411

(my CFLAGS are "-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -g")