patch 8.2.3830: error messages are spread out

Problem:    Error messages are spread out.
Solution:   Move more error messages to errors.h.
diff --git a/src/quickfix.c b/src/quickfix.c
index eeee806..d0f4199 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -7190,7 +7190,7 @@
 	if (!did_bufnr_emsg)
 	{
 	    did_bufnr_emsg = TRUE;
-	    semsg(_("E92: Buffer %d not found"), bufnum);
+	    semsg(_(e_buffer_nr_not_found), bufnum);
 	}
 	valid = FALSE;
 	bufnum = 0;