* libmisc/pam_pass.c: Define do_pam_passwd() as static and add its prototype.

* libmisc/log.c: Define dolastlog() as static and add its prototype.
* src/chage.c: Define isnum() as static and add its prototype.

src/chage.c

@@ -87,6 +87,7 @@ static pam_handle_t *pamh = NULL;
 #define	EPOCH		"1969-12-31"
 
 /* local function prototypes */
+static int isnum (const char *s);
 static void usage (void);
 static void date_to_str (char *, size_t, time_t);
 static int new_fields (void);
@@ -135,7 +136,7 @@ static void fail_exit (int code)
 /*
  * isnum - determine whether or not a string is a number
  */
-int isnum (const char *s)
+static int isnum (const char *s)
 {
 	while ('\0' != *s) {
 		if (!isdigit (*s)) {