polymur: add missing polymur_seed_init() call

It fixes arm builds, including macos-14-arm64

polymur Verification value 0xA612032C means that polymur_seed_init()
was not called. Currently, polymur is compiled in unconditionally,
so it should be initialized unconditionally as well.

See rurban#294, rurban#296, rurban#297, rurban#298 and rurban#299.

Hashes.cpp

@@ -1341,11 +1341,12 @@ void khashv32_test ( const void *key, int len, uint32_t seed, void *out) {
 }
 #endif // HAVE_KHASHV
 
-PolymurHashParams g_polymurhashparams = {
+#include "polymur-hash/polymur-hash.h"
+static PolymurHashParams g_polymurhashparams = {
   UINT64_C(2172266433527442278), UINT64_C(706663945032637854),
   UINT64_C(754693428422558902),  UINT64_C(9067629717964434866)
 };
-void polymur_seed_init (size_t &seed) {
+void polymur_seed_init (size_t seed) {
   polymur_init_params_from_seed(&g_polymurhashparams,
                                 UINT64_C(0xfedbca9876543210) ^ seed);
 }

Hashes.h

@@ -1396,12 +1396,9 @@ void khashv32_test ( const void *key, int len, uint32_t seed, void *out);
 void khashv64_test ( const void *key, int len, uint32_t seed, void *out);
 #endif
 
-#include "polymur-hash/polymur-hash.h"
-extern PolymurHashParams g_polymurhashparams;
-void polymur_seed_init (size_t &seed);
+void polymur_seed_init (size_t seed);
 void polymur_test ( const void *key, int len, uint32_t seed, void *out);
 
-
 /* This version of CRC64 can approach HW crc speeds without hardware support,
    and can be applied to any polynomial. */
 #include "crc64.h"

main.cpp

@@ -939,13 +939,13 @@ bool Hash_Seed_init (pfHash hash, size_t seed) {
   else if(hash == hashx_test)
     hashx_seed_init(info, seed);
   */
-  else if(hash == polymur_test)
-    polymur_seed_init(seed);
 # ifdef HAVE_KHASHV
   else if(hash == khashv64_test || hash == khashv32_test)
     khashv_seed_init(seed);
 # endif
 #endif
+  else if(hash == polymur_test)
+    polymur_seed_init(seed);
   else
       return false;
   return true;