verify_inner definition without declaration

[oerdnj]

When embedding into other projects and the other projects have stricter C checks, this is needed to compile the source:

diff --git a/lib/dns/hawk/hawk_vrfy.c b/lib/dns/hawk/hawk_vrfy.c
index 928e2f44823..2014720a0a0 100644
--- a/lib/dns/hawk/hawk_vrfy.c
+++ b/lib/dns/hawk/hawk_vrfy.c
@@ -2906,6 +2906,12 @@ make_t1(unsigned logn, int16_t *d, const uint8_t *h1)
  */
 TARGET_AVX2_ONLY
 int
+Zh(verify_inner)(unsigned logn,
+        const void *restrict sig, size_t sig_len,
+        const shake_context *restrict sc_data,
+        const void *restrict pub, size_t pub_len,
+        void *restrict tmp, size_t tmp_len, void *restrict ss);
+int
 Zh(verify_inner)(unsigned logn,
        const void *restrict sig, size_t sig_len,
        const shake_context *restrict sc_data,

I do understand the rational for making this non-static, but either this needs declaration first or some magic to strip the static out of the file for tests - f.e. you can include the hawk_vrfy.c file directly (with #include "hawk_vrfy.c") from the tests and you will have access to the static symbols. The local symbols will trump the global symbols.