replace almost all mvwaddstr(hblank) calls with mvwhline(' ', COLS)

calls, which do the same thing


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2840 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

src/files.c

@@ -2581,7 +2581,7 @@ char *do_browser(char *path, DIR *dir)
 		if (j == selected)
 		    wattron(edit, A_REVERSE);
 
-		mvwaddnstr(edit, editline, col, hblank, longest);
+		mvwhline(edit, editline, col, ' ', longest);
 		mvwaddstr(edit, editline, col, disp);
 		free(disp);