-Wall cleanups (removed unused vars, no 'code has no effect' warnings)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3346 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

defines.h

@@ -137,10 +137,10 @@ void xfree _((void*));
 #define EXTERN extern
 #endif
 
-#if defined(sparc) || defined(__sparc__)
 static inline void
 flush_register_windows(void)
 {
+#if defined(sparc) || defined(__sparc__)
 # if defined(__sparc_v9__) || defined(__arch64__)
     asm volatile ("flushw" : :);
 # elif defined(linux) || defined(__linux__)
@@ -148,11 +148,9 @@ flush_register_windows(void)
 # else /* Solaris, OpenBSD, NetBSD, etc. */
     asm volatile ("ta  0x03");
 # endif /* trap always to flush register windows if we are on a Sparc system */
+#endif 
 }
 #define FLUSH_REGISTER_WINDOWS	flush_register_windows()
-#else /* Not a sparc, so */
-#define FLUSH_REGISTER_WINDOWS	NULL
-#endif 
 
 #if defined(DOSISH)
 #define PATH_SEP ";"