fix build error

rtthread-port/jerry_util.c

@@ -196,7 +196,7 @@ int js_read_file(const char* filename, char **script)
     if(!length) return 0;
 
     *script = (char *)rt_malloc(length + 1);
-    if(!(*script)) retrun 0;
+    if(!(*script)) return 0;
     (*script)[length] = '\0';
     fp = fopen(filename,"rb");
     if(!fp) 
@@ -205,7 +205,7 @@ int js_read_file(const char* filename, char **script)
         *script = RT_NULL;
         return 0;
     }
-    if(fread(*script,length,1,fp)) != 1)
+    if(fread(*script,length,1,fp) != 1)
     {
         length = 0;
         rt_free(*script);