Must initialise the donorpool mutex or it fails on windows.
diff --git a/main.c b/main.c
index a045af6..4d0145f 100644
--- a/main.c
+++ b/main.c
@@ -5583,6 +5583,8 @@ int main (int argc, char *argv[])
if (!get_dondata(&donationpool.rpc_url, &donationpool.rpc_userpass))
opt_donation = 0.0;
else {
+ if (unlikely(pthread_mutex_init(&donationpool.pool_lock, NULL)))
+ quit (1, "Failed to pthread_mutex_init in add donpool");
donationpool.enabled = true;
donationpool.pool_no = MAX_POOLS;
if (!pool_active(&donationpool, false))