Better check for OpenThread so it removes a duplicate

src/hook.c

@@ -342,25 +342,23 @@ static MH_STATUS Freeze(PFROZEN_THREADS pThreads, UINT pos, UINT action)
         for (i = 0; i < pThreads->size; ++i)
         {
             HANDLE hThread = OpenThread(THREAD_ACCESS, FALSE, pThreads->pItems[i]);
-            if (hThread == NULL)
-            {
-                // Mark thread as not suspended, so it's not resumed later on.
-                pThreads->pItems[i] = 0;
-            }
-            else
+            BOOL suspended = FALSE;
+            if (hThread != NULL)
             {
                 DWORD result = SuspendThread(hThread);
-                if (result == 0xFFFFFFFF)
-                {
-                    // Mark thread as not suspended, so it's not resumed later on.
-                    pThreads->pItems[i] = 0;
-                }
-                else
+                if (result != 0xFFFFFFFF)
                 {
+                    suspended = TRUE;
                     ProcessThreadIPs(hThread, pos, action);
                 }
                 CloseHandle(hThread);
             }
+
+            if (!suspended)
+            {
+                // Mark thread as not suspended, so it's not resumed later on.
+                pThreads->pItems[i] = 0;
+            }
         }
     }