MB-100 Fix compile warnings

Change-Id: I07cd4b433e724ca5e359d5eec0532d53bb64bf7a
Reviewed-on: http://review.couchbase.org/20549
Reviewed-by: Jens Alfke <jens@couchbase.com>
Reviewed-by: Junyi Xie <junyi.couchbase@gmail.com>
Reviewed-by: Farshid Ghods <farshid@couchbase.com>
Tested-by: Farshid Ghods <farshid@couchbase.com>

Author: apage43

src/couch_db.c

@@ -4,6 +4,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <assert.h>
+#include <stdio.h>
 
 #include "internal.h"
 #include "couch_btree.h"
@@ -1062,15 +1063,15 @@ void couchstore_free_local_document(LocalDoc *lDoc)
 pthread_key_t os_err_key;
 pthread_once_t os_err_init = PTHREAD_ONCE_INIT;
 
-void os_error_destroy(void* err_ptr) {
+static void os_error_destroy(void* err_ptr) {
     free(err_ptr);
 }
 
-void init_os_error_key() {
+static void init_os_error_key(void) {
     pthread_key_create(&os_err_key, os_error_destroy);
 }
 
-struct _os_error *get_os_error_store() {
+struct _os_error *get_os_error_store(void) {
     int once = pthread_once(&os_err_init, init_os_error_key);
     assert(once == 0);
     void *ptr;

src/internal.h

@@ -85,7 +85,7 @@ extern "C" {
     node_pointer *read_root(char *buf, int size);
     void encode_root(char *buf, node_pointer *node);
 
-    struct _os_error *get_os_error_store();
+    struct _os_error *get_os_error_store(void);
 
     extern pthread_key_t os_err_key;
 

src/os.c

@@ -61,7 +61,7 @@ static int win_close(int fd) {
 #define close_int win_close
 #endif
 
-static inline void save_errno() {
+static inline void save_errno(void) {
     get_os_error_store()->errno_err = errno;
 #ifdef WINDOWS
     get_os_error_store()->win_err = 0;