fix compile error

stupid bug, printed % instead of %s

src/link/mapfile.c

@@ -32,7 +32,7 @@ SetSymfileName(char *name)
 	sf = fopen(name, "w");
 
 	if (sf == NULL)
-		errx(EX_CANTCREAT, "Cannot open symfile '%' : %s", name,
+		errx(EX_CANTCREAT, "Cannot open symfile '%s' : %s", name,
 		    strerror(errno));
 
 	fprintf(sf, ";File generated by xLink v" LINK_VERSION "\n\n");