Don't print hosts as %any if %+H is used

That is, the plus sign can be used in the format string to force a numeric
string representation of all host_t objects even 0.0.0.0 and :: which
would otherwise be printed as %any and %any6.

src/libstrongswan/utils/host.c

@@ -110,7 +110,7 @@ int host_printf_hook(printf_hook_data_t *data, printf_hook_spec_t *spec,
 	{
 		snprintf(buffer, sizeof(buffer), "(null)");
 	}
-	else if (is_anyaddr(this))
+	else if (is_anyaddr(this) && !spec->plus)
 	{
 		snprintf(buffer, sizeof(buffer), "%%any%s",
 				 this->address.sa_family == AF_INET6 ? "6" : "");

src/libstrongswan/utils/host.h

@@ -212,6 +212,7 @@ host_t *host_create_any(int family);
  * Arguments are:
  *	host_t *host
  * Use #-modifier to include port number
+ * Use +-modifier to force numeric representation (instead of e.g. %any)
  */
 int host_printf_hook(printf_hook_data_t *data, printf_hook_spec_t *spec,
 					 const void *const *args);