Fix 'include' errors

src/util/EncodeStream.cc

@@ -16,8 +16,8 @@
   Authors: Wu Jiaxu (wujiaxu@sogou-inc.com)
 */
 
-#include <stdio.h>
-#include <string.h>
+#include <stddef.h>
+#include <string>
 #include "list.h"
 #include "EncodeStream.h"
 

src/util/LRUCache.h

@@ -90,7 +90,7 @@ typedef typename Map::const_iterator	MapConstIterator;
 
 public:
 	LRUCache():
-		max_size_(0),
+		max_size_(1),
 		size_(0)
 	{
 		not_use_.next = &not_use_;

src/util/MD5Util.cc

@@ -17,8 +17,8 @@
 */
 
 #include <openssl/md5.h>
-#include <stdio.h>
 #include <string.h>
+#include <string>
 #include "MD5Util.h"
 
 static inline void __md5(const std::string& str, unsigned char *md)

src/util/StringUtil.cc

@@ -17,6 +17,8 @@
 */
 
 #include <ctype.h>
+#include <string>
+#include <vector>
 #include <algorithm>
 #include "StringUtil.h"
 

src/util/StringUtil.h

@@ -18,6 +18,7 @@
 
 #ifndef _STRINGUTIL_H_
 #define _STRINGUTIL_H_
+
 #include <string>
 #include <vector>
 

src/util/URIParser.cc

@@ -19,9 +19,10 @@
 */
 
 #include <string.h>
-#include <ctype.h>
 #include <errno.h>
 #include <utility>
+#include <vector>
+#include <map>
 #include "StringUtil.h"
 #include "URIParser.h"