gresource-tool: fix the build

diff --git a/gio/gresource-tool.c b/gio/gresource-tool.c
index 4211d56..8fead39 100644 (file)
--- a/gio/gresource-tool.c
+++ b/gio/gresource-tool.c
@@ -29,6 +29,7 @@
 #include <fcntl.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <locale.h>
 
 #ifdef HAVE_LIBELF
 #include <libelf.h>