patch 8.2.2874: MS-Windows: screen redraws too often

Problem:    MS-Windows: screen redraws too often.
Solution:   Do not redraw when peeking for a character. (closes #8230,
            closes #8211)

Author: matveyt

src/os_win32.c

@@ -1648,7 +1648,9 @@ WaitForChar(long msec, int ignore_input)
 	peek_console_input(g_hConIn, &ir, 1, &cRecords);
 
 # ifdef FEAT_MBYTE_IME
-	if (State & CMDLINE && msg_row == Rows - 1)
+	// May have to redraw if the cursor ends up in the wrong place.
+	// Only when not peeking.
+	if (State & CMDLINE && msg_row == Rows - 1 && msec != 0)
 	{
 	    CONSOLE_SCREEN_BUFFER_INFO csbi;
 

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2874,
 /**/
     2873,
 /**/