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)
diff --git a/src/terminal.c b/src/terminal.c
index 5622ce3..53edb83 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -968,7 +968,7 @@
 	    /* 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))
diff --git a/src/version.c b/src/version.c
index 0ef1f45..2db4ca9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    843,
+/**/
     842,
 /**/
     841,