Use correct type for thread handle. It already uses pthread_t for other half of the
assignment
https://bugs.gentoo.org/897844
--- a/src/manager/mwaveapi.c
+++ b/src/manager/mwaveapi.c
@@ -79,7 +79,7 @@
 BOOL g_bIPCSupportActive = FALSE;         // True if our IPC support layer is initialized and active
 unsigned g_uIPCsInUse;                    // One bit per IPC in use for this subsystem
 BOOL g_abCancellingIPCs[MWAPI_MaxIPCs];   // TRUE if we're attempting to cancel an IPC thread
-HANDLE g_ahIPCThreads[MWAPI_MaxIPCs];     // Thread handle of IPC thread
+pthread_t g_ahIPCThreads[MWAPI_MaxIPCs];  // Thread handle of IPC thread
 PFN g_pfnIPCNotice[MWAPI_MaxIPCs];
 
 BOOL   bDspDisabled = FALSE;