updated for version 7.4b.022

Problem:    Not waiting for a character when the tick count overflows.
Solution:   Subtract the unsigned numbers and cast to int. (Ken Takata)

Author: brammool

src/os_win32.c

@@ -1357,9 +1357,10 @@ WaitForChar(long msec)
 
 	if (msec > 0)
 	{
-	    /* If the specified wait time has passed, return. */
+	    /* If the specified wait time has passed, return.  Beware that
+	     * GetTickCount() may wrap around (overflow). */
 	    dwNow = GetTickCount();
-	    if (dwNow >= dwEndTime)
+	    if ((int)(dwNow - dwEndTime) >= 0)
 		break;
 	}
 	if (msec != 0)

src/version.c

@@ -727,6 +727,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    22,
 /**/
     21,
 /**/