testdisk: fix gcc-14 build

fix incompatible pointer type by updating a function definition
ntfs_device_testdisk_io_ioctl to take an unsigned long rather than an
int. The function implementation is empty and just returns error so the
updated argument type has no effect.

pkgs/tools/system/testdisk/default.nix

@@ -33,6 +33,10 @@ assert enableQt -> qwt != null;
     sha256 = "1zlh44w67py416hkvw6nrfmjickc2d43v51vcli5p374d5sw84ql";
   };
 
+  patches = [
+    ./gcc-14-fixes.diff
+  ];
+
   postPatch = ''
     substituteInPlace linux/qphotorec.desktop \
       --replace "/usr" "$out"

pkgs/tools/system/testdisk/gcc-14-fixes.diff

@@ -0,0 +1,15 @@
+diff --git a/src/ntfs_io.c b/src/ntfs_io.c
+index 7f57edd..4b718bb 100644
+--- a/src/ntfs_io.c
++++ b/src/ntfs_io.c
+@@ -154,8 +154,8 @@ static int ntfs_device_testdisk_io_stat(struct ntfs_device *dev, struct stat *bu
+ 	return -1;
+ }
+ 
+-static int ntfs_device_testdisk_io_ioctl(struct ntfs_device *dev, int request,
+-		void *argp)
++static int ntfs_device_testdisk_io_ioctl(struct ntfs_device *dev,
++                                         unsigned long request, void *argp)
+ {
+ 	log_warning( "ntfs_device_testdisk_io_ioctl() unimplemented\n");
+ #ifdef ENOTSUP