MINOR: chunk: New function free_trash_buffers()
This new function is meant to be called in the general deinit phase,
to free those two internal chunks.
diff --git a/include/common/chunk.h b/include/common/chunk.h
index 18f41af..8225d96 100644
--- a/include/common/chunk.h
+++ b/include/common/chunk.h
@@ -48,6 +48,7 @@
int chunk_strcmp(const struct chunk *chk, const char *str);
int chunk_strcasecmp(const struct chunk *chk, const char *str);
int alloc_trash_buffers(int bufsize);
+void free_trash_buffers(void);
struct chunk *get_trash_chunk(void);
static inline void chunk_reset(struct chunk *chk)