Fix gcc -Wwrite-strings warning

diff --git a/src/XF86VMode.c b/src/XF86VMode.c
index 99a0073..4f19cf3 100644 (file)
--- a/src/XF86VMode.c
+++ b/src/XF86VMode.c
@@ -46,7 +46,7 @@ from Kaleb S. KEITHLEY.
 
 static XExtensionInfo _xf86vidmode_info_data;
 static XExtensionInfo *xf86vidmode_info = &_xf86vidmode_info_data;
-static char *xf86vidmode_extension_name = XF86VIDMODENAME;
+static const char *xf86vidmode_extension_name = XF86VIDMODENAME;
 
 #define XF86VidModeCheckExtension(dpy,i,val) \
   XextCheckExtension (dpy, i, xf86vidmode_extension_name, val)