lib/smbclient/Init: move code to SmbclientContext::New()

We no longer need to call smbc_init() because we don't need the compat
layer anymore.

src/lib/smbclient/Context.cxx

@@ -22,6 +22,21 @@
 
 #include <cerrno>
 
+#include <string.h>
+
+static void
+mpd_smbc_get_auth_data([[maybe_unused]] const char *srv,
+		       [[maybe_unused]] const char *shr,
+		       char *wg, [[maybe_unused]] int wglen,
+		       char *un, [[maybe_unused]] int unlen,
+		       char *pw, [[maybe_unused]] int pwlen)
+{
+	// TODO: implement
+	strcpy(wg, "WORKGROUP");
+	strcpy(un, "");
+	strcpy(pw, "");
+}
+
 SmbclientContext
 SmbclientContext::New()
 {
@@ -29,6 +44,10 @@ SmbclientContext::New()
 	if (ctx == nullptr)
 		throw MakeErrno("smbc_new_context() failed");
 
+	constexpr int debug = 0;
+	smbc_setDebug(ctx, debug);
+	smbc_setFunctionAuthData(ctx, mpd_smbc_get_auth_data);
+
 	SMBCCTX *ctx2 = smbc_init_context(ctx);
 	if (ctx2 == nullptr) {
 		int e = errno;

src/lib/smbclient/Init.cxx

@@ -18,33 +18,10 @@
  */
 
 #include "Init.hxx"
-#include "Mutex.hxx"
-#include "thread/Mutex.hxx"
-#include "system/Error.hxx"
-
-#include <libsmbclient.h>
-
-#include <string.h>
-
-static void
-mpd_smbc_get_auth_data([[maybe_unused]] const char *srv,
-		       [[maybe_unused]] const char *shr,
-		       char *wg, [[maybe_unused]] int wglen,
-		       char *un, [[maybe_unused]] int unlen,
-		       char *pw, [[maybe_unused]] int pwlen)
-{
-	// TODO: implement
-	strcpy(wg, "WORKGROUP");
-	strcpy(un, "");
-	strcpy(pw, "");
-}
 
 void
 SmbclientInit()
 {
-	const std::lock_guard<Mutex> protect(smbclient_mutex);
+	/* this is currently a no-op, but one day, we might want to
-
+	   call smbc_thread_posix() here */
-	constexpr int debug = 0;
-	if (smbc_init(mpd_smbc_get_auth_data, debug) < 0)
-		throw MakeErrno("smbc_init() failed");
 }