Warning fixes.

ISO C99 doesn’t support unnamed structs/unions.
Comparison of distinct pointer types lacks a cast.
Dereferencing type-punned pointer will break strict-aliasing rules.
Type of bit-field ‘ext’ is a GCC extension.

JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com

jerry-core/jerry-api.h

@@ -118,12 +118,10 @@ typedef struct jerry_api_value_t
 
     uint32_t v_uint32; /**< number converted 32-bit unsigned integer */
 
-    union
-    {
-      jerry_api_string_t *v_string; /**< pointer to a JS string */
-      jerry_api_object_t *v_object; /**< pointer to a JS object */
-    };
-  };
+    jerry_api_string_t *v_string; /**< pointer to a JS string */
+    jerry_api_object_t *v_object; /**< pointer to a JS object */
+
+  } u;
 } jerry_api_value_t;
 
 /**