Change FB_NELEM return type to unsigned and resolve all FB_NELEM related Wsign-compare warnings #8338
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FB_NELEM
returns the size of the input array, which is always unsigned, but the function returns an int. It is a bit confusing, so I decided to change the type. It fixed someWsign-compare
warnings but added a bunch of new ones. Therefore, I included resolving them in the PR.