patch 8.0.0889: gcc gives warnings for uninitialized variables

Problem:    Gcc gives warnings for uninitialized variables. (Tony Mechelynck)
Solution:   Initialize variables even though they are not used.
diff --git a/src/terminal.c b/src/terminal.c
index 901bb9b..7029f49 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -2145,7 +2145,11 @@
     pos.row = get_row_number(&argvars[1], term);
 
     if (term->tl_vterm != NULL)
+    {
 	screen = vterm_obtain_screen(term->tl_vterm);
+	p = NULL;
+	line = NULL;
+    }
     else
     {
 	linenr_T	lnum = pos.row + term->tl_scrollback_scrolled;
diff --git a/src/version.c b/src/version.c
index 5a1660a..e5cafdc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    889,
+/**/
     888,
 /**/
     887,