lib: af: constify herror message

This string is never modified, so constify it.

lib/ax25.c

@@ -143,7 +143,7 @@ static int AX25_input(int type, char *bufp, struct sockaddr *sap)
 
 
 /* Display an error message. */
-static void AX25_herror(char *text)
+static void AX25_herror(const char *text)
 {
     if (text == NULL)
 	fprintf(stderr, "%s\n", AX25_errmsg);

lib/inet.c

@@ -231,7 +231,7 @@ static int INET_rresolve(char *name, size_t len, struct sockaddr_in *sin,
 }
 
 
-static void INET_reserror(char *text)
+static void INET_reserror(const char *text)
 {
     herror(text);
 }

lib/inet6.c

@@ -116,7 +116,7 @@ static int INET6_rresolve(char *name, size_t namelen,
 }
 
 
-static void INET6_reserror(char *text)
+static void INET6_reserror(const char *text)
 {
     herror(text);
 }

lib/net-support.h

@@ -41,7 +41,7 @@ struct aftype {
     const char *(*print) (const char *);
     const char *(*sprint) (struct sockaddr *, int numeric);
     int (*input) (int type, char *bufp, struct sockaddr *);
-    void (*herror) (char *text);
+    void (*herror) (const char *text);
     int (*rprint) (int options);
     int (*rinput) (int typ, int ext, char **argv);
 

lib/netrom.c

@@ -146,7 +146,7 @@ static int NETROM_input(int type, char *bufp, struct sockaddr *sap)
 
 
 /* Display an error message. */
-static void NETROM_herror(char *text)
+static void NETROM_herror(const char *text)
 {
     if (text == NULL)
 	fprintf(stderr, "%s\n", netrom_errmsg);

lib/rose.c

@@ -100,7 +100,7 @@ static int ROSE_input(int type, char *bufp, struct sockaddr *sap)
 
 
 /* Display an error message. */
-static void ROSE_herror(char *text)
+static void ROSE_herror(const char *text)
 {
     if (text == NULL)
 	fprintf(stderr, "%s\n", ROSE_errmsg);

lib/x25.c

@@ -131,7 +131,7 @@ X25_input(int type, char *bufp, struct sockaddr *sap)
 
 /* Display an error message. */
 static void
-X25_herror(char *text)
+X25_herror(const char *text)
 {
   if (text == NULL) fprintf(stderr, "%s\n", X25_errmsg);
     else fprintf(stderr, "%s: %s\n", text, X25_errmsg);