patch 8.0.0843: MS-Windows: compiler warning for signed/unsigned

Problem:    MS-Windows: compiler warning for signed/unsigned.
Solution:   Add type cast. (Yasuhiro Matsumoto, closes #1912)

Author: brammool

src/terminal.c

@@ -968,7 +968,7 @@ terminal_loop(void)
 	    /* We don't know if the job can handle CTRL-C itself or not, this
 	     * may kill the shell instead of killing the command running in the
 	     * shell. */
-	    mch_stop_job(curbuf->b_term->tl_job, "quit")
+	    mch_stop_job(curbuf->b_term->tl_job, (char_u *)"quit")
 #endif
 
 	if (c == (termkey == 0 ? Ctrl_W : termkey))

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    843,
 /**/
     842,
 /**/