nad: use constant pointers where appropriate

Author: rdmark

bin/nad/nad_cp.c

@@ -728,7 +728,7 @@ static int ftw_copy_file(const struct FTW *entp _U_,
     size_t wresid;
     off_t wtotal;
     int ch, checkch, from_fd = 0, rcount, rval, to_fd = 0;
-    char *bufp;
+    const char *bufp;
     char *p;
 
     if ((from_fd = open(spath, O_RDONLY, 0)) == -1) {

bin/nad/nad_find.c

@@ -252,7 +252,7 @@ int ad_find(int argc, char **argv, AFPObj *obj)
     } else {
         ret = 0;
         cnid_t cnid;
-        char *bufp = resbuf;
+        const char *bufp = resbuf;
         bstring sep = bfromcstr("/");
 
         while (count--) {

bin/nad/nad_ls.c

@@ -208,7 +208,8 @@ static void print_date(const struct stat *statp)
 {
     time_t now;
     double diff;
-    char buf[100], *fmt;
+    char buf[100];
+    const char *fmt;
 
     if (time(&now) == -1) {
         printf(" ????????????");
@@ -231,7 +232,7 @@ static void print_flags(char *path, afpvol_t *vol, const struct stat *st)
 {
     int adflags = 0;
     struct adouble ad;
-    char *FinderInfo;
+    const char *FinderInfo;
     uint16_t FinderFlags;
     uint16_t AFPattributes;
     char type[5] = "----";