evas_test_textblock: Fix unused variable warning

In evas_textblock_cursor test, the variable 'dir' is only used if
HAVE_FRIBIDI is defined. If that is not defined, then we get an unused
variable warning when compiling. This patch wraps the variable around
an #ifdef so that it does not get declared without FRIBIDI support.

src/tests/evas/evas_test_textblock.c

@@ -109,7 +109,9 @@ EFL_START_TEST(evas_textblock_cursor)
    Evas_Coord x, y, w, h;
    size_t i, j, len;
    Evas_Coord nw, nh;
+#ifdef HAVE_FRIBIDI
    Evas_BiDi_Direction dir;
+#endif
    const char *buf = "This is a<br/> test.<ps/>Lets see if this works.<ps/>עוד פסקה.";
 
    /* Walk the textblock using cursor_char_next */