util: mark externally-unused functions as static
These functions aren't used outside of sha1.c, so let's remove the prototypes from the header-file, and mark the definitions as static.
Just a small clean-up, inspired by reading !23151 (closed)...
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These functions aren't used outside of sha1.c, so let's remove the prototypes from the header-file, and mark the definitions as static.
Just a small clean-up, inspired by reading !23151 (closed)...