grafx2: include haiku.h in setup.c

the default declaration would convert the returned pointer to int and crash on 64bit

media-gfx/grafx2/patches/grafx2-2.8.patchset

@@ -1,31 +1,45 @@
-From b616fdb35baf79ece153b70ca3613d57dee212de Mon Sep 17 00:00:00 2001
+From 9df6715c21c6064153a068f11ff008d71615aefc Mon Sep 17 00:00:00 2001
 From: Jerome Duval <jerome.duval@gmail.com>
 Date: Tue, 30 Mar 2021 10:59:41 +0200
-Subject: add checks in Extract_path
+Subject: include haiku.h in setup.c
 
+improve haiku_get_app_path()
 
-diff --git a/src/io.c b/src/io.c
-index ab64904..30da356 100644
---- a/src/io.c
-+++ b/src/io.c
-@@ -353,6 +353,17 @@ char * Extract_path(char *dest, const char *source)
-   char * position;
-   char * path;
+diff --git a/src/haiku.cpp b/src/haiku.cpp
+index 708564c..a13e623 100644
+--- a/src/haiku.cpp
++++ b/src/haiku.cpp
+@@ -63,12 +63,13 @@ char* haiku_get_clipboard()
+ const char* haiku_get_app_path()
+ {
+ 	static image_info info;
+-	static int32 cookie = 0;
++	int32 cookie = 0;
  
-+  if (dest == NULL)
-+  {
-+    GFX2_Log(GFX2_ERROR, "Extract_path() dest is null !\n");
-+    return NULL;
-+  }
-+  if (source == NULL)
-+  {
-+    GFX2_Log(GFX2_ERROR, "Extract_path() source is null !\n");
-+    return NULL;
-+  }
-+
-   path = Realpath(source, dest);
-   if (path == NULL)
-   {
+-	if (cookie == 0) do {
+-		get_next_image_info(B_CURRENT_TEAM, &cookie, &info);
+-	} while (info.type != B_APP_IMAGE);
++	while (get_next_image_info(B_CURRENT_TEAM, &cookie, &info) == B_OK) {
++		if (info.type == B_APP_IMAGE)
++			return info.name;
++	}
+ 
+-	return info.name;
++	return NULL;
+ }
+ #endif
+diff --git a/src/setup.c b/src/setup.c
+index 3ecb0f6..1a5844c 100644
+--- a/src/setup.c
++++ b/src/setup.c
+@@ -43,6 +43,7 @@
+   #include <errno.h>
+ #elif defined(__HAIKU__)
+   #include <FindDirectory.h>
++  #include "haiku.h"
+ #endif
+ 
+ #include "struct.h"
 -- 
 2.30.0