Zend/zend_string: include cleanup

Author: MaxKellermann

Zend/zend_string.c

@@ -16,6 +16,7 @@
    +----------------------------------------------------------------------+
 */
 
+#include "zend_string.h"
 #include "zend.h"
 #include "zend_globals.h"
 

Zend/zend_string.h

@@ -19,7 +19,9 @@
 #ifndef ZEND_STRING_H
 #define ZEND_STRING_H
 
-#include "zend.h"
+#include "zend_alloc.h" // for pemalloc()
+#include "zend_portability.h" // for BEGIN_EXTERN_C
+#include "zend_types.h" // for zend_string
 
 BEGIN_EXTERN_C()