added a test whether we have reach the end of the input string

without this such an input json (incorrect json string as there is no {} characters):
"key": "value"
would be parsed correctly: "key" would be parsed and the rest would be skipped

space/spaceparser.cpp

@@ -323,6 +323,11 @@ void SpaceParser::ParseRootSpace()
 		Parse(root_space, false, false);
 	}
 
+	SkipWhite();
+
+	if( lastc != -1 )
+		status = syntax_error;
+
 	token.clear();
 }