[gnome-commander/ConvertWarningsToErrors] src/gnome-cmd-file-selector.cc: fix for -Wmissing-declarations

[Uwe Scholz <uwescholz src gnome org>]

commit 8dcc9d37ead08ff66ff0c16bc4d165ee3266e513
Author: Mamoru TASAKA <mtasaka fedoraproject org>
Date:   Sun Apr 23 15:37:14 2017 +0900

    src/gnome-cmd-file-selector.cc: fix for -Wmissing-declarations
    
    src/gnome-cmd-file-selector.cc:1437:10: error: no previous declaration for 'gboolean 
on_filter_box_keypressed(GtkEntry*, GdkEventKey*, GnomeCmdFileSelector*)' [-Werror=missing-declarations]
     gboolean on_filter_box_keypressed (GtkEntry *entry, GdkEventKey *event, GnomeCmdFileSelector *fs)
      - No function declaration appears on headers.

 src/gnome-cmd-file-selector.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gnome-cmd-file-selector.cc b/src/gnome-cmd-file-selector.cc
index 90cdf03..02c5261 100644
--- a/src/gnome-cmd-file-selector.cc
+++ b/src/gnome-cmd-file-selector.cc
@@ -1434,7 +1434,7 @@ static void on_filter_box_close (GtkButton *btn, GnomeCmdFileSelector *fs)
 }
 
 
-gboolean on_filter_box_keypressed (GtkEntry *entry, GdkEventKey *event, GnomeCmdFileSelector *fs)
+static gboolean on_filter_box_keypressed (GtkEntry *entry, GdkEventKey *event, GnomeCmdFileSelector *fs)
 {
     if (state_is_blank (event->state))
         if (event->keyval == GDK_Escape)