Use int instead of long for struct dir->items

2 billion files should be enough for everyone. You probably won't have
enough memory to scan such a filesystem. int is a better choice than
long, as sizeof(int) is 4 on pretty much any system where ncdu runs.

src/dir.h

@@ -80,7 +80,7 @@ struct dir_output {
   /* The output code is responsible for updating these stats. Can be 0 when not
    * available. */
   int64_t size;
-  long items;
+  int items;
 };
 
 

src/dir_common.c

@@ -182,7 +182,7 @@ void dir_draw() {
     if(dir_fatalerr)
       fprintf(stderr, "\r%s.\n", dir_fatalerr);
     else
-      fprintf(stderr, "\r%-55s %8ld files /%s",
+      fprintf(stderr, "\r%-55s %8d files /%s",
         cropstr(dir_curpath, 55), dir_output.items, formatsize(dir_output.size));
     break;
   case 2:

src/global.h

@@ -62,7 +62,7 @@ struct dir {
   struct dir *parent, *next, *prev, *sub, *hlnk;
   int64_t size, asize;
   ino_t ino;
-  long items;
+  int items;
   dev_t dev;
   unsigned char flags;
   char name[3]; /* must be large enough to hold ".." */

src/util.c

@@ -283,7 +283,7 @@ struct dir *getroot(struct dir *d) {
 }
 
 
-void addparentstats(struct dir *d, int64_t size, int64_t asize, long items) {
+void addparentstats(struct dir *d, int64_t size, int64_t asize, int items) {
   while(d) {
     d->size += size;
     d->asize += asize;

src/util.h

@@ -82,7 +82,7 @@ char *getpath(struct dir *);
 struct dir *getroot(struct dir *);
 
 /* Adds a value to the size, asize and items fields of *d and its parents */
-void addparentstats(struct dir *, int64_t, int64_t, long);
+void addparentstats(struct dir *, int64_t, int64_t, int);
 
 #endif