Merge pull request #42 from logos-messaging/initialize-lock

initialize ctxPoolLock to avoid crash on Windows/iOS

library/libsds.nim

@@ -140,6 +140,7 @@ proc initializeLibrary() {.exported.} =
     ## Every Nim library needs to call `<yourprefix>NimMain` once exactly, to initialize the Nim runtime.
     ## Being `<yourprefix>` the value given in the optional compilation flag --nimMainPrefix:yourprefix
     libsdsNimMain()
+    ctxPoolLock.initLock() # ensure the lock is initialized once (fix Windows crash)
   when declared(setupForeignThreadGc):
     setupForeignThreadGc()
   when declared(nimGC_setStackBottom):