Don't use strlen for string literals (#2517)

Their length (size) is known at compile time. Therefore `sizeof`
is more efficient for them.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

targets/particle/source/main.cpp

@@ -114,9 +114,7 @@ test_jerry ()
     test.delay(250); \
   ";
 
-  size_t script_size = strlen ((const char *) script);
-
-  jerry_value_t eval_ret = jerry_eval (script, script_size, JERRY_PARSE_NO_OPTS);
+  jerry_value_t eval_ret = jerry_eval (script, sizeof (script) - 1, JERRY_PARSE_NO_OPTS);
 
   /* Free JavaScript value, returned by eval */
   jerry_release_value (eval_ret);