Attempt At Fixing Clang (#647)

* Update Game.h

* Update Game.h

* Update macros.h

include/macros.h

@@ -4,6 +4,20 @@
 #include <math.h>
 #include <libultraship.h>
 
+// no return attribute
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    #include <stdnoreturn.h>
+    #define NORETURN noreturn
+#elif defined(__cplusplus) && __cplusplus >= 201103L
+    #define NORETURN [[noreturn]]
+#elif defined(_MSC_VER)
+    #define NORETURN __declspec(noreturn)
+#elif defined(__GNUC__) || defined(__clang__)
+    #define NORETURN __attribute__((noreturn))
+#else
+    #define NORETURN
+#endif
+
 #ifndef __sgi
 #define GLOBAL_ASM(...)
 #endif

src/port/Game.h

@@ -4,6 +4,7 @@
 #include <libultraship.h>
 #include "engine/tracks/Track.h"
 #include "engine/HM_Intro.h"
+#include "macros.h"
 
 #ifdef __cplusplus
 #include "engine/editor/Editor.h"
@@ -235,17 +236,7 @@ void CM_ResetAudio(void);
 __attribute__((format(printf, 1, 2)))
 #endif
 
-// Add noreturn attribute
-#if defined(_MSC_VER)
-    __declspec(noreturn) 
-#elif defined(__APPLE__)
-#elif defined(__OpenBSD__)
-#elif defined(__cplusplus) || (__STDC_VERSION__ >= 202311)
-    [[noreturn]] 
-#elif defined(__GNUC__)
-    __attribute__((noreturn))
-#endif
-void CM_ThrowRuntimeError(const char* fmt, ...);
+NORETURN void CM_ThrowRuntimeError(const char* fmt, ...);
 
 // NOLINTEND(readability-identifier-naming)