File fix-gcc15.patch of Package dunedynasty

diff --git a/src/os/sleep.h b/src/os/sleep.h
index 7eec60c..a65f32e 100644
--- a/src/os/sleep.h
+++ b/src/os/sleep.h
@@ -8,10 +8,14 @@
 	#define sleep(x) Sleep(x * 1000)
 	#define msleep(x) Sleep(x)
 #else
+#define _XOPEN_SOURCE 600
+#include <stdint.h>
 	#if !defined(__USE_BSD)
 		#define __USE_BSD
+                #define __USE_MISC
 		#include <unistd.h>
 		#undef __USE_BSD
+                #undef __USE_MISC
 	#else
 		#include <unistd.h>
 	#endif /* __USE_BSD */