[vte] regex: Fix build without PCRE2

[Christian Persch <chpe src gnome org>]

commit 9201006aa1b06ccf8de4cf41f42456f7f87693ed
Author: Christian Persch <chpe gnome org>
Date:   Wed Oct 7 22:29:16 2015 +0200

    regex: Fix build without PCRE2

 src/vte.cc   |    4 ++++
 src/vteapp.c |    2 ++
 2 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/vte.cc b/src/vte.cc
index 4ae96bb..2963bfe 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -2193,6 +2193,7 @@ vte_terminal_event_check_regex_simple(VteTerminal *terminal,
                                       guint32 match_flags,
                                       char **matches)
 {
+#ifdef WITH_PCRE2
         VteTerminalPrivate *pvt = terminal->pvt;
        gsize offset, sattr, eattr;
         pcre2_match_data_8 *match_data;
@@ -2249,6 +2250,9 @@ vte_terminal_event_check_regex_simple(VteTerminal *terminal,
         pcre2_match_context_free_8(match_context);
 
         return any_matches;
+#else
+        return FALSE;
+#endif
 }
 
 /**
diff --git a/src/vteapp.c b/src/vteapp.c
index bfddf8c..844dbfc 100644
--- a/src/vteapp.c
+++ b/src/vteapp.c
@@ -48,7 +48,9 @@ static const char *builtin_dingus[] = {
   NULL
 };
 
+#ifdef WITH_PCRE2
 static gboolean use_gregex = FALSE;
+#endif
 
 static void
 window_title_changed(GtkWidget *widget, gpointer win)