lib: bump hash sizes to size_t

Follow-up to cc907e80a2 #13502
Cherry-picked from #13489
Closes #13601

lib/conncache.c

@@ -100,7 +100,7 @@ static void free_bundle_hash_entry(void *freethis)
   bundle_destroy(b);
 }
 
-int Curl_conncache_init(struct conncache *connc, int size)
+int Curl_conncache_init(struct conncache *connc, size_t size)
 {
   /* allocate a new easy handle to use when closing cached connections */
   connc->closure_handle = curl_easy_init();

lib/conncache.h

@@ -85,7 +85,7 @@ struct connectbundle {
 };
 
 /* returns 1 on error, 0 is fine */
-int Curl_conncache_init(struct conncache *, int size);
+int Curl_conncache_init(struct conncache *, size_t size);
 void Curl_conncache_destroy(struct conncache *connc);
 
 /* return the correct bundle, to a host or a proxy */

lib/hostip.c

@@ -1094,7 +1094,7 @@ static void freednsentry(void *freethis)
 /*
  * Curl_init_dnscache() inits a new DNS cache.
  */
-void Curl_init_dnscache(struct Curl_hash *hash, int size)
+void Curl_init_dnscache(struct Curl_hash *hash, size_t size)
 {
   Curl_hash_init(hash, size, Curl_hash_str, Curl_str_key_compare,
                  freednsentry);

lib/hostip.h

@@ -166,7 +166,7 @@ void Curl_resolv_unlock(struct Curl_easy *data,
                         struct Curl_dns_entry *dns);
 
 /* init a new dns cache */
-void Curl_init_dnscache(struct Curl_hash *hash, int hashsize);
+void Curl_init_dnscache(struct Curl_hash *hash, size_t hashsize);
 
 /* prune old entries from the DNS cache */
 void Curl_hostcache_prune(struct Curl_easy *data);

lib/multi.c

@@ -364,7 +364,7 @@ static size_t hash_fd(void *key, size_t key_length, size_t slots_num)
  * per call."
  *
  */
-static void sh_init(struct Curl_hash *hash, int hashsize)
+static void sh_init(struct Curl_hash *hash, size_t hashsize)
 {
   Curl_hash_init(hash, hashsize, hash_fd, fd_key_compare,
                  sh_freeentry);
@@ -381,9 +381,9 @@ static void multi_addmsg(struct Curl_multi *multi, struct Curl_message *msg)
   Curl_llist_append(&multi->msglist, msg, &msg->list);
 }
 
-struct Curl_multi *Curl_multi_handle(int hashsize, /* socket hash */
-                                     int chashsize, /* connection hash */
-                                     int dnssize) /* dns hash */
+struct Curl_multi *Curl_multi_handle(size_t hashsize, /* socket hash */
+                                     size_t chashsize, /* connection hash */
+                                     size_t dnssize) /* dns hash */
 {
   struct Curl_multi *multi = calloc(1, sizeof(struct Curl_multi));
 

lib/multiif.h

@@ -45,8 +45,9 @@ void Curl_multi_connchanged(struct Curl_multi *multi);
 
 /* Internal version of curl_multi_init() accepts size parameters for the
    socket, connection and dns hashes */
-struct Curl_multi *Curl_multi_handle(int hashsize, int chashsize,
-                                     int dnssize);
+struct Curl_multi *Curl_multi_handle(size_t hashsize,
+                                     size_t chashsize,
+                                     size_t dnssize);
 
 /* the write bits start at bit 16 for the *getsock() bitmap */
 #define GETSOCK_WRITEBITSTART 16