ext/libxml: make internal function static

Author: MaxKellermann

ext/libxml/libxml.c

@@ -730,9 +730,9 @@ PHP_LIBXML_API void php_libxml_ctx_warning(void *ctx, const char *msg, ...)
 }
 
 #if LIBXML_VERSION >= 21200
-PHP_LIBXML_API void php_libxml_structured_error_handler(void *userData, const xmlError *error)
+static void php_libxml_structured_error_handler(void *userData, const xmlErrorPtr error)
 #else
-PHP_LIBXML_API void php_libxml_structured_error_handler(void *userData, xmlErrorPtr error)
+static void php_libxml_structured_error_handler(void *userData, xmlErrorPtr error)
 #endif
 {
 	_php_list_set_error_structure(error, NULL);

ext/sqlite3/sqlite3.c

@@ -39,7 +39,7 @@ static void sqlite3_param_dtor(zval *data);
 static int php_sqlite3_compare_stmt_zval_free(php_sqlite3_free_list **free_list, zval *statement);
 
 /* {{{ Error Handler */
-static void php_sqlite3_error(php_sqlite3_db_object *db_obj, char *format, ...)
+static void php_sqlite3_error(php_sqlite3_db_object *db_obj, const char *format, ...)
 {
 	va_list arg;
 	char 	*message;