edje_test: Make the variable returned in test_layout_get static

Signed-off-by: Daniel Willmann <d.willmann@samsung.com>

src/tests/edje/edje_test_edje.c

@@ -41,7 +41,7 @@ END_TEST
 static const char *
 test_layout_get(const char *name)
 {
-   const char filename[PATH_MAX];
+   static char filename[PATH_MAX];
 
    snprintf(filename, PATH_MAX, TESTS_BUILD_DIR"/data/%s", name);