preparatory patch for -Wwrite-strings #2
diff --git a/util-linux/fbset.c b/util-linux/fbset.c
index 7ae0101..94d04b1 100644
--- a/util-linux/fbset.c
+++ b/util-linux/fbset.c
@@ -314,8 +314,8 @@
 {
 	struct fb_var_screeninfo var, varset;
 	int fh, i;
-	char *fbdev = DEFAULTFBDEV;
-	char *modefile = DEFAULTFBMODE;
+	const char *fbdev = DEFAULTFBDEV;
+	const char *modefile = DEFAULTFBMODE;
 	char *thisarg, *mode = NULL;
 
 	memset(&varset, 0xFF, sizeof(varset));