patch 8.2.0647: MS-Windows: repeat count for events was not used

Problem:    MS-Windows: repeat count for events was not used.
Solution:   Check the repeat count. (Nobuhiro Takasaki, closes #5989)
diff --git a/src/os_win32.c b/src/os_win32.c
index 6b32869..85efc52 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -307,6 +307,7 @@
     int head;
     int tail;
     int i;
+    static INPUT_RECORD s_irPseudo;
 
     if (nLength == -2)
 	return (s_dwMax > 0) ? TRUE : FALSE;
@@ -354,6 +355,19 @@
 	}
     }
 
+    if (s_irCache[s_dwIndex].EventType == KEY_EVENT)
+    {
+	if (s_irCache[s_dwIndex].Event.KeyEvent.wRepeatCount > 1)
+	{
+	    s_irPseudo = s_irCache[s_dwIndex];
+	    s_irPseudo.Event.KeyEvent.wRepeatCount = 1;
+	    s_irCache[s_dwIndex].Event.KeyEvent.wRepeatCount--;
+	    *lpBuffer = s_irPseudo;
+	    *lpEvents = 1;
+	    return TRUE;
+	}
+    }
+
     *lpBuffer = s_irCache[s_dwIndex];
     if (!(nLength == -1 || nLength == -2) && ++s_dwIndex >= s_dwMax)
 	s_dwMax = 0;